# Parallelogram of Forces

## Parallelogram of Forces

a geometric representation of the law of composition of forces. The law of parallelogram of forces states that the vector representing the force equal to the geometric sum of two forces is given by the diagonal of a parallelogram whose sides are the vectors of the two forces. Thus, when two forces are applied to a body at the same point, the resultant of the forces can be found by constructing a parallelogram of forces. In dynamics this result is valid only for motion at velocities much less than the velocity of light.

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If many simultaneously and variously directed forces act on a given body, the direction of its motion cannot coincide with any one of those forces, but will always be a mean- what in mechanics is represented by the diagonal of a parallelogram of forces.
The resultant force of the parallelogram of forces offers the student the possibility of lifting the torso on the table that can be executed depending on its morpho sportsman in two ways :

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