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Graphical placing of the resultant force. In physics and engineering, a resultant force is the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body via vector addition. The defining feature of a resultant force, or resultant force-torque, is that it has the same effect on the rigid body ...
When forces act upon an object, they change its acceleration. The net force is the combined effect of all the forces on the object's acceleration, as described by Newton's second law of motion . When the net force is applied at a specific point on an object, the associated torque can be calculated. The sum of the net force and torque is called ...
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 body in a given condition. It depicts a body or connected bodies with all the applied ...
In mechanics, a couple is a system of forces with a resultant (a.k.a. net or sum) moment of force but no resultant force. [ 1] A more descriptive term is force couple or pure moment. Its effect is to impart angular momentum but no linear momentum. In rigid body dynamics, force couples are free vectors, meaning their effects on a body are ...
Equilibrant force. In mechanics, an equilibrant force is a force which brings a body into mechanical equilibrium. [ 1] According to Newton's second law, a body has zero acceleration when the vector sum of all the forces acting upon it is zero: Therefore, an equilibrant force is equal in magnitude and opposite in direction to the resultant of ...
Stress resultants are defined as integrals of stress over the thickness of a structural element. The integrals are weighted by integer powers the thickness coordinate z (or x3 ). Stress resultants are so defined to represent the effect of stress as a membrane force N (zero power in z ), bending moment M (power 1) on a beam or shell (structure).
Calculating the attractive or repulsive force between two magnets is, in the general case, a very complex operation, as it depends on the shape, magnetization, orientation and separation of the magnets. The magnetic pole model does depend on some knowledge of how the ‘magnetic charge’ is distributed over the magnetic poles.
Note that R is the resultant force from non-uniform pressure at the wheel-roadbed contact surface. This pressure is greater towards the front of the wheel due to hysteresis. Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface