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The elevator shown in fig. is descending...

The elevator shown in fig. is descending with an acceleration of `2ms^(-2)`. The mass of the block `A=0.5kg`. Find the force (in Newton) exerted by block A on block B.

A

2

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
B
Let `A` applies a force `R` on `B` ,
Then `B` also applies an opposite force `R` on `A` as shown.
For `A` : `mg-R=ma`
implies `R=m(g-a)=0.5[10-2]=4N`
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