Question

How is the work done by a force measured when (i) force is in direction of displacement , (ii) force is at an angle to the direction of displacement ?

Answer 1

for the 1st case W=FS
for the 2nd case W=FScos ∆
where ∆ is the angle between the component of force and displacement

Answer 2

Answer:

I.Work done = force × displacement of the point of application of the force in the direction of force.

II.When the force is at an angle theta to the direction of displacement.