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A painter of mass M stands on a platform...

A painter of mass M stands on a platforms of mass m and pulls himself up by two ropes which hang over pulley as shown in fig. He pulls each rope with force F and moves upward with uniform acceleration a, find a (neglecting the fact that no one could do this for long time).

A

`g//2`

B

`g//4`

C

`g`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
for `(` man `+` platform `)` system `:`
`2mg-4T=2m(a)`

`rArr2mg-4((mg)/(2))=2m(a)=2m(a)[ :'T=(mg)/(2)]`
`rArr a=0`
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