Question

derive the equation W=f *s

Answer 1

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W = F Cos Ф  * s

         F = force (vector) applied on an object.,        s = displacement (vector)

         Ф = angle between the force and displacement vectors.

   Cos Ф gives the component of force along the direction that the body is displaced.

   ie.,  F Cos Ф and s are in the same direction.

Answer 2

Explanation:

W = F Cos Ф * s

F = force (vector) applied on an object., s = displacement (vector)

Ф = angle between the force and displacement vectors.

Cos Ф gives the component of force along the direction that the body is displaced.

ie., F Cos Ф and s are in the same direction.