A block of mass 1kg
is pulled along a curved path ACB
by a tangential force where C
is on the top of the path and A,B
are the points where the curved path meet with the horizontal line. The total distance of ACB
path is 25m and the horizontal distance of point A
and point B
is 10m. The coefficient of friction between the block and the path is .2. Then what is the work done (in joule) by the frictional force when the block moves from A to B ?