00:01
Hi, in this question we have to discuss about the work done by force of friction.
00:07
So, work done by force of friction.
00:12
So, work done by force of friction.
00:16
So, here the work done by work done is the product of force into perpendicular distance or the displacement.
00:23
So, positive positive work is done.
00:27
So, positive work is done when.
00:29
So, positive work is done when the displacement when f is parallel to d and negative work is done when f is anti -parallel.
00:40
So, that is they are acting in the opposite direction.
00:44
Therefore, we have.
00:46
So, work done is 0...