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Two bodies of masses 2kg and 3kg are con...

Two bodies of masses 2kg and 3kg are connected by a metel wire of cross section 0.04 `mm^(2)`. Breaking stress of metel wire is 2.5 Gpa. The maximum force F that can be applied to 3kg block so that wire does not break is :

A

100N

B

150N

C

200N

D

250N

Text Solution

Verified by Experts

The correct Answer is:
D

`(T)/(A)=2.5xx10^(9)`
`T=(2.5xx10^(9))A`
`T=2.5xx10^(9)xx0.04xx10^(-6)=100`
Then maximum acceleration of block 2kg is = `50 m//sec^(3)`

F-T=ma
`F=T+ma=100+3xx50=250N`
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