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For the following system shown assume th...


For the following system shown assume that pulley is frictionless, string is massless (m remains on M),
Q. Normal reaction on m is (force on C due to B)

A

`(Mmg)/(2M+m)`

B

`(2Mmg)/(2M+m)`

C

`(Mmg)/(M+2m)`

D

`(2Mgm)/(M+2m)`

Text Solution

Verified by Experts

The correct Answer is:
B
free body diagram `"C'` block

`mg-N=ma`
`:. N=m(g-(mg)/(2M+m))N=(2Mmg)/(2M+m)`
`T-mg=M(mg)/(2M+m)` for `A` block
`:. T=Mg+(Mmg)/(2M+m)`

for pulley
`P=2T+Mg`
`=2Mg+(2Mmg)/(2M+m)+Mg=(6M+3m+2m)/(2M+m)Mg`
`P=((6M+5m)/(2M+m))Mg`
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