6 A plank of mass 10 kg is kept on a rough horizontal

Last updated: 6/14/2023

6 A plank of mass 10 kg is kept on a rough horizontal surface A block of mass 2 kg is kept over the plank The coefficient of friction for the surface in contact is given A force of magnitude 66 N is applied horizontal as shown in the figure Calculate the work done by the friction on the upper block in 5 sec Assume the plank is long enough A 100 J M 0 2 H 0 1 77 B 100 J 2 kg 10 kg C 200 J F D Zero