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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 1.5 m/s2. Force exerted by 20 kg block on the 50 kg block is nearly:

a
250 N
b
230 N
c
170 N
d
150 N

detailed solution

Correct option is B

FBD of 20 kg,N−20g=20(1.5)⇒N=230 newton

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