Question

y acceleration of A is 2m/s2 which is smaller than acceleration on B then the value of frictional force applied by B on A is
(1)50N
(2) 20 N
(3) 10N
(4) None of these​

Answer 1

Answer:

10N

Explanation:

friction is only responsible for movement of A. so ma for A is 10N

Answer 2

Answer:

${\overbrace{\underbrace{\blue{10N}}}}$