No work is done when :

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Question

(C) In physics,work is defined as the product of the force applied and the displacement in the direction of the force. The formula is $W = F \cdot s \

Vedclass · Accepted Answer

there is no component of force,parallel to the direction of motion

Vedclass · Answer

(C) In physics,work is defined as the product of the force applied and the displacement in the direction of the force. The formula is $W = F \cdot s \cdot \cos(	heta)$,where $	heta$ is the angle between the force and the displacement.If there is no component of force parallel to the direction of motion,then $	heta = 90^\circ$. Since $\cos(90^\circ) = 0$,the work done $W$ becomes $0$.Therefore,no work is done when there is no component of force parallel to the direction of motion.

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