Question

16. The whole wedge and block system is moving as
shown in the figure. Block of mass m is not slipping
on the wedge. Then which of the following
statement is correct (surface between M and m is
rough) :-

(1) Work done by normal force on block is zero
(2) Work done by friction force on block is zero
(3) Work done by normal force on block is not zero
(4) None of these​

Answer 1

Answer:

its 3 sis.. hope it is helpful

Answer 2

Answer:

(3) Work done by normal force on block is not zero