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What force F must be applied so that m(1...

What force F must be applied so that `m_(1)` and `m_(2)` are at rest on `m_(3)` in

A

`(m_(1)+m_(2)+m_(3))(m_(2)g)/(m_(1))`

B

`(m_(1)+m_(2))(m_(2)g)/(m_(1))`

C

`(m_(2)+m_(3))(m_(1)g)/(m_(2))`

D

`(m_(1)+m_(3))(m_(1)g)/(m^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
`a=(F)/((m_(1)+m_(2)+m_(3)))`
`T=m_(2)g=m_(1)xx(F)/((m_(1)+m_(2)+m_(3)))`
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