Block A of mass m rests on the plank B of mass 3m which is free to slide on a frictionless horizontal surface. The coefficient of friction between the block and plank is 0.2. If a horizontal force of magnitude 2 mg is applied to the plank B, the acceleration of A relative to the plank and relative to the ground respectively, are :

Block A of mass m rests on the plank B of mass 3m which is free to sli

1.	Block A of mass m rests on the plank B of mass 3m which is free to slide on a frictionless horizontal surface. The coefficient of friction between the block and plank is 0.2. If a horizontal force of magnitude 2 mg is applied to the plank B, the acceleration of A relative to the plank and relative to the ground respectively, are :
Answer» `0,(G)/(2)` `0,(2g)/(3)` `(3g)/(5),(g)/(5)` `(2g)/(5),(g)/(5)` ANSWER :D