What happens to the work done when the displacement of a body is at right angles to the direction of force acting of it? Explain your answer.

Question

Philoid · Accepted Answer

Work done is zero in this case, since there is no displacement in the direction of force. Or in other words we can explain it as,

We know,

W = F s cos θ,

Where W = work done,

F = force,

s = displacement,

θ = angle between force and distance

When force is perpendicular to the direction of motion, Cos 90°=0,hence the work done is zero.