On the floor of an elevator a block of mass 50 kg is placed on which another block of mass 20 kg is also placed. The elevator is moving up with a constant acceleration `1.5m//s^(2)` Force exerted by 20 kg block on the 50 kg block is nearly:

Options

A. 250 N
B. 230 N
C. 170 N
D. 150 N

Answer

B

Explanation

Force exerted by 20 kg. on 50 kg :-
`N = 20 [g+a] = 20 [10 + 1.5]`
= 230 N