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A man of mass m stands on a platform of ...

A man of mass `m` stands on a platform of equal mass `m` and pulls himself by two ropes passing over pulleys as shown in figure.If he pulls each rope with a force equal to half his weight ,his upwards acceleration would be

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