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Force exerted on an object by a body with which it is in contact, and vice versa
In mechanics, the normal force F N {\displaystyle F_{N}} is the component of a contact force that is perpendicular to the surface that an object contacts
Normal_force
Force resisting sliding motion
friction force itself depends on the normal force, and hence on the mass of the block. Depending on the situation, the calculation of the normal force N {\displaystyle
Friction
Influence that can change motion of an object
include elastic, frictional, contact or "normal" forces, and gravitational. The rotational version of force is torque, which produces changes in the rotational
Force
Force between two objects that are in physical contact
surface(s) in contact called the normal force, and one parallel to the surface(s) in contact, called the friction force. Not all forces are contact forces;
Contact_force
Force directed to the center of rotation
also be supplied as a 'push' force, such as in the case where the normal reaction of a wall supplies the centripetal force for a wall of death or a Rotor
Centripetal_force
Diagram showing applied forces and moments on a physical body
example. In that case the friction force only has an x component, and the normal force only has a y component. The force of gravity would then have components
Free_body_diagram
Inclination of road or surface other than flat
the bank angle is zero, the surface is flat and the normal force is vertically upward. The only force keeping the vehicle turning on its path is friction
Banked_turn
Force used to generate motion between a body and a tangential surface
maximum tractive force to the normal force and is termed the coefficient of traction (similar to coefficient of friction). It is the force which makes an
Traction_(mechanics)
2025 film by Ben Wheatley
Normal is a 2025 American action comedy film directed by Ben Wheatley from a screenplay by Derek Kolstad, based on a story he co-wrote with Bob Odenkirk
Normal_(2025_film)
Tilted flat supporting surface
lowered down a vertical distance by using the normal force of the plane to reduce the gravitational force. Aircraft evacuation slides allow people to rapidly
Inclined_plane
Models and algorithms for simulating collision and reaction
support force exerted upon an object which is in contact with another stable object. Normal force is sometimes referred to as the pressing force since its
Collision_response
Use of circular rotational force to mimic gravity
appearance of a centrifugal force in a rotating frame of reference (the transmission of centripetal acceleration via normal force in the non-rotating frame
Artificial_gravity
Force exerted by the ground on a body in contact with it
person. In the above example, the ground reaction force coincides with the notion of a normal force. However, in a more general case, the GRF will also
Ground_reaction_force
Study of the deformation of solids that touch each other
material in contact. It gives the contact stress as a function of the normal contact force, the radii of curvature of both bodies and the modulus of elasticity
Contact_mechanics
Apparent force in a rotating reference frame
settle on a spheroid shape, such that the normal force, the gravitational force and the centrifugal force exactly balance each other on a "horizontal"
Coriolis_force
Force distributed over an area
vector normal to the surface) with the normal force acting on it. The pressure is the scalar proportionality constant that relates these two normal vectors:
Pressure
Type of electrical connector mechanism
stick – the integrated helical spring in the pin applies a constant normal force against the back of the mating receptacle or contact plate, counteracting
Pogo_pin
Buoyancy principle in fluid dynamics
across the cube's stretch). The fluid will exert a normal force on each face, but only the normal forces on top and bottom will contribute to buoyancy
Archimedes'_principle
Type of vertical-axis wind turbine
creates a force on the blade. This force can be decomposed into an axial and normal force (Fig. 5). In the case of a Darrieus turbine, the axial force associated
Darrieus_wind_turbine
Upward force that opposes the weight of an object immersed in fluid
a tension restraint force T in order to remain fully submerged. An object which tends to sink will eventually have a normal force of constraint N exerted
Buoyancy
Force resisting the motion when a body rolls on a surface
friction, rolling resistance is often expressed as a coefficient times the normal force. This coefficient of rolling resistance is generally much smaller than
Rolling_resistance
Science of rubbing surfaces
that static friction force may depend on the contact time and sliding (kinetic) friction may depend on sliding velocity, normal force and contact area. In
Tribology
Physics of bouncing balls
friction is therefore pushing the ball to the right. Unlike the normal force and the force of gravity, these frictional forces will exert a torque on the
Bouncing_ball
Surface force denoted fs is the force that acts across an internal or external surface element in a material body. Normal forces and shear forces between
Surface_force
Reactive force occurring with every action (Newton's 3rd law of motion)
support force in upward direction (tension force, normal force, buoyant force, respectively). This support force is an 'equal and opposite' force; we know
Reaction_(physics)
Fundamental interaction between charged particles
and the normal force are derived from the electric force, another of the fundamental forces. Gravity is a rather weak force... The electric force between
Electromagnetism
Circular component rotating on an axle
the coefficient of friction μ = 0.5, the normal force is 981 N and the work done (required energy) is (work=force x distance) 981 × 0.5 × 10 = 4905 joules
Wheel
Science of the motion of projectiles
exerted by pressurized gases from a gun barrel or a propelling nozzle, normal force by rifling, and gravity and air drag during flight. A ballistic missile
Ballistics
Motion of a body subject only to gravity
body approximately equally. When there are no other forces, such as the normal force exerted between a body (e.g. an astronaut in orbit) and its surrounding
Free_fall
Periodic change in the direction of a rotation axis
top, its weight is acting downwards from its center of mass and the normal force (reaction) of the ground is pushing up on it at the point of contact
Precession
Damping mechanism in which kinetic energy is dissipated by sliding friction
if both are stationary. The force Fs exerted between the objects does exceed—in magnitude—the product of the normal force N and the coefficient of static
Coulomb_damping
Vehicle dynamics terms
total traction force (grip) available to the tyre is the vector sum of the lateral and longitudinal forces, a function of the normal force and coefficient
Understeer_and_oversteer
Physical phenomenon
there is an Equatorial bulge. The force of gravity is directed towards the center of the Earth. The normal force is perpendicular to the local surface
Eötvös_effect
Deformation of a metal surface due to friction
develop in both objects around the area where they contact. As this normal force increases, both the ball and the plate's surfaces deform. The deformation
Burnishing_(metal)
Small unit of liquid
lateral and normal forces. For example, it can apply a normal force at zero lateral force for the drop to fly off away from the surface in the normal direction
Drop_(liquid)
Force exerted on a body as it moves through air or gas
There are two causes of aerodynamic force: the normal force due to the pressure on the surface of the body the shear force due to the viscosity of the gas
Aerodynamic_force
Deformation mechanism
the normal force and the weight force at the exact moment in which the rolling starts, so the value of the torque given by the rolling friction force is
Rolling_contact_fatigue
Formula relating load-force and hold-force on a line wound around a cylinder
slipping, this is also the frictional force, which is by definition μ {\textstyle \mu } times the normal force R ( φ ) {\displaystyle R(\varphi )} . By
Capstan_equation
Water turbine
component and a tangential component, shown here as "Normal force" and "Axial force" respectively. The normal forces are opposed by the rigidity of the turbine
Gorlov_helical_turbine
area apparent on a macroscopic scale. Contact area may depend on the normal force between the two objects due to deformation. The contact area depends
Contact_area
Laws in physics about force and motion
gravitational force, "normal" force, friction, and string tension. Newton's second law is sometimes presented as a definition of force, i.e., a force is that
Newton's_laws_of_motion
Force tending to bend a structural element
force is called the shear force (if it is along the plane of element) or the normal force (if it is transverse to the plane of the element). Normal force
Bending_moment
because some energy is always lost in when one mass applies a non-zero normal force to another. Therefore, the observed speed, acceleration and distance
Frictionless_plane
Force perpendicular to flow of surrounding fluid
airspeed. Pressure is the normal force per unit area exerted by the air on itself and on surfaces that it touches. The lift force is transmitted through
Lift_(force)
Property of a mass in motion
surrounding water. The force from below is greater than the force from above by just the amount needed to balance gravity. The normal force per unit area is
Momentum
Internal power in Chinese martial arts
of friction changes with the environment, frictional force becomes unstable. Direct normal force is more reliable and allows muscular strength to be exerted
Neijin
Mounting element that transfers loads from a pipe to supporting structures
to hold the support with concrete. In this type of support, normal force and friction force can become significant. To alleviate the frictional effect
Pipe_support
Topics referred to by the same term
vagus N for Newton (unit), the SI derived unit of force N or F n {\displaystyle F_{n}} , a normal force in mechanics Nitrogen, symbol N, a chemical element
N_(disambiguation)
Mechanism to constrain relative movement to the desired motion and reduce friction
pressurized medium, to keep the two solid parts from touching or to reduce the normal force between them. Depending on the bearing design, this can operate in hydrodynamic
Bearing_(mechanical)
Line or vector perpendicular to a curve or a surface
known as Gauss map. The word "normal" is also used as an adjective: a line normal to a plane, the normal component of a force, etc. The concept of normality
Normal_(geometry)
Force which acts throughout the volume of a body
Fictitious force Force density Non-contact force Normal force Surface force Springer site - Book 'Solid mechanics'. preview paragraph 'Body forces'. "A force that
Body_force
friction is that the friction force has magnitude μN in the direction opposite to the direction of slip, where N is the normal force and μ is a constant (the
Differential_inclusion
Motorcycle calamity
turning) occur at the contact patch through friction and normal forces. There is a limited amount of force tangential to the road that the contact patch can
Highsider
Relative motion of two surfaces in contact or separated by a thin film of fluid
_{k}\cdot N} Where Fk, is the force of kinetic friction. μk is the coefficient of kinetic friction, and N is the normal force. Sledding Pushing an object
Sliding_(motion)
Screw used as a linkage in a mechanism
right). The force of the load is directed downward, the normal force is perpendicular to the hypotenuse of the triangle, the frictional force is directed
Leadscrew
Air service branch of the U.S. military
The United States Air Force (USAF) is the air service branch of the United States Armed Forces. It is a part of the United States Department of Defense
United_States_Air_Force
Threaded fastener with an external male thread requiring a matching female thread
where two members make contact. Because friction is proportional to the normal force, connections must be sized with bolts numerous and large enough to provide
Bolt_(fastener)
Method for analyzing stability of slopes of soil or rock
shear forces at the interface after substituting the expression for the normal force: ∑ j T j R j = ∑ j [ W j x j − ( W j cos α j − k W j sin α j ) f
Slope_stability_analysis
Pendulum with center of mass above pivot
{\displaystyle F_{N}} is the normal force applied to the cart. This second equation depends only on the vertical reaction force, thus the equation can be
Inverted_pendulum
When the net force on a particle is zero
the net force on that particle is zero. By extension, a physical system made up of many parts is in mechanical equilibrium if the net force on each of
Mechanical_equilibrium
Device used in physical therapy
practice. By applying the proportionality of the kinetic force of friction to the normal force, f k = μ k F n {\displaystyle f_{\mathrm {k} }=\mu _{\mathrm
Gyroscopic_exercise_tool
Dimensionless parameter in fluid mechanics
the Oldroyd-B model, the elastic forces can be written as the first Normal force (N1). Wi = elastic forces viscous forces = τ x x − τ y y τ x y = 2 λ
Weissenberg_number
Polymer with rubber-like elastic properties
Xinglong; Xuan, Shouhu (2013-09-01). "Influence of Shear Deformation on the Normal Force of Magnetorheological Elastomer". Materials Letters. 106: 270–272. Bibcode:2013MatL
Elastomer
Effective force in molecular and colloidal systems
\int _{h}^{\infty }f(z)dz} , and f ( z ) {\displaystyle f(z)} is the normal force per unit area between two flat surfaces distance z {\displaystyle z}
Depletion_force
Probability distribution
X has a normal distribution. Equivalently, if Y has a normal distribution, then the exponential function of Y, X = exp(Y), has a log-normal distribution
Log-normal_distribution
In graphonomics, Axial pen force is the component of the normal pen force that is parallel to the pen. It is dependent upon pen tilt. In the special case
Axial_pen_force
Steepest angle at which granular materials can be piled before slumping
frictional force f {\displaystyle f} is equal to the product of the coefficient of static friction μ {\displaystyle \mu } and the normal force N = m g cos
Angle_of_repose
USAF aircraft carrying the US president
fuselage, quiet enough for normal conversation in a private compartment.... Consider the fantastic fact that the Air Force VC-137, plush government counterpart
Air_Force_One
Formulation of physics
perpendicular to M {\displaystyle \displaystyle M} . It is called the normal force. The force F {\displaystyle \displaystyle \mathbf {F} } from (6) is subdivided
Newtonian_dynamics
Interactions among inertial, elastic, and aerodynamic forces
trailing edge Computing separation from trailing edge based on Mach number Normal force fluctuating divergence In the period 1950–1970, AGARD developed the Manual
Aeroelasticity
Type of motion which combines translation and rotation with respect to a surface
rolling in an inclined plane which experiences only static friction, normal force and its own weight, (air drag is absent) the acceleration in the direction
Rolling
Driving and motorcycle riding technique
from the rear of the car forward to the front tires, increasing the normal force on them and in turn increasing the amount of traction the front (steering)
Trail_braking
Conspiracy theory about contrails
supposed chemtrails are in fact normal contrails. Chemtrail conspiracy theories began to circulate after the United States Air Force (USAF) published a 1996 report
Chemtrail_conspiracy_theory
Outward bulge around a planet's equator due to its rotation
the equatorial and polar diameters of a planet, due to the centrifugal force exerted by the rotation about the body's axis. A rotating body tends to
Equatorial_bulge
W=W_{m}+W_{f}+W_{t}} The force applied to the surface by a magnetic particle in the magnetic brush can be divided into two components. The normal force and the tangential
Magnetic field-assisted finishing
Magnetic_field-assisted_finishing
Branch of mechanics concerned with solid materials and their behaviors
and normal stress is the normal force per unit area of that material plane. Shearing forces in contrast with normal forces, act parallel rather than
Solid_mechanics
Science behind the motion of bicycles and motorcycles
but can also be from crosswinds. At normal bicycling speeds on level ground, aerodynamic drag is the largest force resisting forward motion. At faster
Bicycle and motorcycle dynamics
Bicycle_and_motorcycle_dynamics
Type of wind turbine
relative airflow. The tangential force acts along the blade's velocity, pulling the blade around, and the normal force acts radially, pushing against the
Vertical-axis_wind_turbine
cutting force ( F t {\displaystyle F_{t}} ) defines the resultant force in the direction of the cutting motion. The normal component or thrust force ( N t
Cutting_force_(machining)
Topics referred to by the same term
Drag (physics), during movement through a fluid (see fluid dynamics) Normal force, exerted reactionally back on the acting body by the compressive, tensile
Resistive_force
Rate of change of velocity
or normal acceleration (or centripetal acceleration during circular motion), the reaction to which the passengers experience as a centrifugal force (another
Acceleration
Type of dam using its weight to hold back water
built on soil. Stability of the dam primarily arises from the range of normal force angles viably generated by the foundation. Also, the stiff nature of
Gravity_dam
Physical quantity that expresses internal forces in a continuous material
stress and strain. Cauchy observed that the force across an imaginary surface was a linear function of its normal vector; and, moreover, that it must be a
Stress_(mechanics)
Physical quantity of rough surfaces
Normal contact stiffness is a physical quantity related to the generalized force displacement behavior of rough surfaces in contact with a rigid body or
Normal_contact_stiffness
Bedrock abrasions from glacier movement
pressure it will cause the ice to effectively buoy up and decrease the normal force of the ice on the bedrock. Another result of this is that the velocity
Glacial_striation
Tendency of a liquid surface to shrink to reduce surface area
difference times surface area results in a normal force. In order for the surface tension forces to cancel the force due to pressure, the surface must be curved
Surface_tension
Type of fluid flow
normal on the surface S {\displaystyle S} . The Lorentz reciprocal theorem can be used to show that Stokes flow "transmits" unchanged the total force
Stokes_flow
Physical acceleration experienced by an object
purposes) observers experience an upward proper-acceleration due to the normal force exerted by the earth on the bottom of their shoes. This cancels the downward
Proper_acceleration
Object movement along a circular path
circle. If an object is acted on by gravity and a downward normal force, the radial force equation is: F r = n + m g = m v 2 r {\displaystyle F_{r}=n+mg={\frac
Circular_motion
Component of stress coplanar with a material cross section
the shear force, the component of force vector parallel to the material cross section. Normal stress, on the other hand, arises from the force vector component
Shear_stress
Town in Illinois, United States
Normal is a town in McLean County, Illinois, United States. The population was 52,736 at the 2020 census. Normal is the smaller of two principal cities
Normal,_Illinois
Instrument that measures friction and wear between surfaces
Then using the general equation for friction force: F = μ N {\displaystyle F=\mu N} Where N, the normal force, is equal to the weight (mass x gravity) of
Tribometer
Educational institution to train teachers
A normal school or normal college trains teachers in the norms of pedagogy and curriculum. Other names include teacher training colleges or teachers'
Normal_school
Strain caused by an external load
{M}{{I_{x}}'}}y{\frac {\rho }{\rho +y}}} where F {\displaystyle F} is the normal force A {\displaystyle A} is the section area M {\displaystyle M} is the bending
Bending
\beta =0} , the wedge is converted into a half-plane with a normal force and a tangential force. In that case C 1 = − F 1 π , C 3 = − F 2 π {\displaystyle
Flamant_solution
American military medical training school
The centrifuge exposes subject to up to 9Gs (g-forces), or 9 times the normal force of gravity, to teach the effects of G-forces on human physiology and
United States Air Force School of Aerospace Medicine
United_States_Air_Force_School_of_Aerospace_Medicine
Load-carrying bearing using rolling elements and rings
character is the accuracy ratings, which normally are, in ascending order: 0 (normal), 6X, 6, 5, 4, T, and 2. Ratings 0 and 6 are the most common; ratings 5
Rolling-element_bearing
Mechanism that converts motion, and forces, from rotational to linear
greater the angle between the load vector and the surface normal, so the larger the normal force between the threads required to support a given load. Therefore
Screw_mechanism
Proposed driving force for tectonic plate motion
down on the lithosphere at the mid-ocean ridge is mostly opposed by the normal force from the underlying rock, but the remainder acts to push the lithosphere
Ridge_push
Mathematical model of how solid objects deform
point force acting on the surface of an infinite half-space. It was derived by Boussinesq for the normal force and Cerruti for the tangential force and
Linear_elasticity
NORMAL FORCE
NORMAL FORCE
Boy/Male
Shakespearean
Hamlet, Prince of Denmark' Fortinbras, Prince of Norway.
Male
English
English form of Norwegian Normund, NORMAND means "north protection."
Boy/Male
American, Australian, French, Scottish
From the Northern Town
Surname or Lastname
English, Irish (Ulster), Scottish, and Dutch
English, Irish (Ulster), Scottish, and Dutch : name applied either to a Scandinavian or to someone from Normandy in northern France. The Scandinavian adventurers of the Dark Ages called themselves norðmenn ‘men from the North’. Before 1066, Scandinavian settlers in England were already fairly readily absorbed, and Northman and Normann came to be used as bynames and later as personal names, even among the Saxon inhabitants. The term gained a new use from 1066 onwards, when England was settled by invaders from Normandy, who were likewise of Scandinavian origin but by now largely integrated with the native population and speaking a Romance language, retaining only their original Germanic name.French : regional name for someone from Normandy.Dutch : ethnic name for a Norwegian.Jewish (Ashkenazic) : variant of Nordman.Jewish : Americanized form of some like-sounding Ashkenazic name.Swedish : from norr ‘north’ + man ‘man’.Albert Andriessen Bradt, a settler in Rensselaerswijck on the upper Hudson River in NY, was originally from Norway and was known as de Norrman (‘the Norwegian’). The waterway south of Albany which powered his mills became known as the Normanskill (‘the Norman’s Waterway’), by which name it is still known today.
Biblical
treasurer of Nergal
Boy/Male
Hindu
Clean, Pure
Female
English
 Feminine form of English Norman, NORMA means "northman." Compare with another form of Norma.
Girl/Female
Indian, Punjabi, Sikh, Telugu
Pure; Without Any Impurity
Boy/Male
Biblical
Treasurer of Nergal.
Male
Scottish
Scottish form of Irish Gaelic Cormac, CORMAG means "son of defilement."
Girl/Female
Indian
Soft
Boy/Male
Scottish American
From the north valley.
Female
English
English name derived from the gem name, from Latin corallium, probably ultimately from Hebrew goral, CORAL means "small pebble."
Boy/Male
French Teutonic American English German
From the north.
Boy/Male
Assamese, Bengali, Celebrity, Gujarati, Hindu, Indian, Jain, Kannada, Malayalam, Marathi, Punjabi, Sikh, Sindhi, Tamil, Telugu, Traditional
Kindness; Clean; Pure; Talent Person; The One who is Pure
Girl/Female
American, Australian, British, Chinese, Christian, Danish, English, Finnish, French, German, Latin, Swedish
From the North; Pattern; Courage; Norseman; Rule; Standard; Female Version of Norman
Male
English
English form of Teutonic Nordemann, NORMAN means "northman."
Boy/Male
Afghan, Arabic
Handsome
Female
Italian
 Italian name invented by Felice Romani in his libretto for Belini's opera of the same name, derived from Latin norma, NORMA means "standard, rule." Compare with another form of Norma.
Girl/Female
Latin American
Rule; pattern. Can also be a feminine form of Norman: from the North.
NORMAL FORCE
NORMAL FORCE
Girl/Female
Christian, French, German
Bright; Glowing Maiden; Female Version of Bernard
Boy/Male
British, English
Blend of Jar and Darell
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Gift from Godess Durga
Boy/Male
Hindu
The Sun
Girl/Female
Hindu
Noble
Boy/Male
American, Australian, Chinese
Friends; Forever Smiling; Allies; A Native American Tribal Name
Boy/Male
Tamil
Chandrashekara | சநà¯à®¤à¯à®°à®·à¯‡à®•à®°à®¾Â Â
Lord Shiva
Boy/Male
Hindu, Indian, Marathi
A Sage
Boy/Male
Hindu, Indian, Punjabi, Sikh
Warrior of God
Boy/Male
Australian, Dutch, German, Scandinavian
Supplanter; Son of Ann; Son of the Divine; Son of Hans
NORMAL FORCE
NORMAL FORCE
NORMAL FORCE
NORMAL FORCE
NORMAL FORCE
a.
According to a square or rule; perpendicular; forming a right angle. Specifically: Of or pertaining to a normal.
a.
Sound; normal.
a.
Northern; pertaining to the north, or to the north wind; as, a boreal bird; a boreal blast.
a.
Denoting certain hypothetical compounds, as acids from which the real acids are obtained by dehydration; thus, normal sulphuric acid and normal nitric acid are respectively S(OH)6, and N(OH)5.
a.
Both renal and portal. See Portal.
a.
Having the form or appearance without the substance or essence; external; as, formal duty; formal worship; formal courtesy, etc.
a.
Serving to teach or convey a moral; as, a moral lesson; moral tales.
a.
Alt. of Loral
n.
See Wormil.
a.
According to an established norm, rule, or principle; conformed to a type, standard, or regular form; performing the proper functions; not abnormal; regular; natural; analogical.
n.
See Mormal.
n.
See Wormil.
a.
Not according to rule; abnormal.
a.
Pertaining to, or situated near, the back, or dorsum, of an animal or of one of its parts; notal; tergal; neural; as, the dorsal fin of a fish; the dorsal artery of the tongue; -- opposed to ventral.
a.
Denoting that series of hydrocarbons in which no carbon atom is united with more than two other carbon atoms; as, normal pentane, hexane, etc. Cf. Iso-.
a.
Of or pertaining to Normandy or to the Normans; as, the Norman language; the Norman conquest.
adv.
In a normal manner.
a.
Done in due form, or with solemnity; according to regular method; not incidental, sudden or irregular; express; as, he gave his formal consent.
n.
The quality, state, or fact of being normal; as, the point of normalcy.
a.
Human; belonging to man, who is mortal; as, mortal wit or knowledge; mortal power.