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One end of massless rope, which passes o...

One end of massless rope, which passes over a massless and frictionless pulley P is tied to a hook C while the other end is free. Maximum vertical force that the clamp can bear is 180 N. With what value of minimum safe acceleration ( in `ms^(-2)`) can a man of 60 kg climp down the rops ?

A

`10`

B

`5`

C

`8`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
D

T-mg=-ma
`T sin 30^(@) =180 `
from above two equations `a=4 m//s^(2)`
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