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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.

Text Solution

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The correct Answer is:
4
Let A apply a force R on B

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