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Free body diagram - Wikipedia Block on a ramp and corresponding free body diagram of the block In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition
Friction - Wikipedia The normal force and the frictional force are ultimately determined using vector analysis, usually via a free body diagram In general, process for solving any statics problem with friction is to treat contacting surfaces tentatively as immovable so that the corresponding tangential reaction force between them can be calculated
Frictional contact mechanics - Wikipedia Frictional contact mechanics is the study of the deformation of bodies in the presence of frictional effects, whereas frictionless contact mechanics assumes the absence of such effects
Sliding (motion) - Wikipedia Sliding may occur between two objects of arbitrary shape, whereas rolling friction is the frictional force associated with the rotational movement of a somewhat disclike or other circular object along a surface Generally, the frictional force of rolling friction is less than that associated with sliding kinetic friction [1]
Stokes law - Wikipedia The force of viscosity on a small sphere moving through a viscous fluid is given by: [3][4] F → d = − 6 π μ R v → {\displaystyle {\vec {F}}_ {\rm {d}}=-6\pi \mu R {\vec {v}}} where (in SI units): F → d {\displaystyle {\vec {F}}_ {\rm {d}}} is the frictional force – known as Stokes' drag – acting on the interface between the fluid and the particle (newtons, kg m s −2); μ (some
Contact force - Wikipedia Contact force Block on a ramp and corresponding free body diagram of the block showing the contact force from the ramp onto the bottom of the block and separated into two components, a normal force N and a friction force f, along with the body force of gravity mg acting at the center of mass
Net force - Wikipedia A free body diagram of a block resting on a rough inclined plane, with its weight (W), normal reaction (N) and friction (F) shown In mechanics, the net force is the sum of all the forces acting on an object For example, if two forces are acting upon an object in opposite directions, and one force is greater than the other, the forces can be replaced with a single force that is the difference
Friction torque - Wikipedia In mechanics, friction torque is the torque caused by the frictional force working in couple that occurs when two objects in contact move [1] Like all torques, it is a rotational force that may be measured in newton meters or pounds-feet