Question

When does a force do work?​

Answer 1

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A force is said to do work when it acts on a body so that there is a displacement of the point of application in the direction of the force. Thus, a force does work when it results in movement. in this relation Fa is the force acted upon spring by the object.

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what is force?

a pull or push of an object is known as force

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Answer 2

A force is said to do work when it acts on a body so that there is a displacement of the point of application in the direction of the force. Thus, a force does work when it results in movement.

The work done by a constant force of magnitude F on a point that moves a displacement in the direction of the force is simply the product.