question_answer

If \[F=20\text{ }N,\] with how much force does block A presses the block B -

A) 10 N

B) 20 N

C) 30 N

D) Zero

Correct Answer: D

Solution :

[d] If F = 20 N, 10 kg block will not move and it will not press 5 kg block So N = 0.