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A system is as shown in the figure. All ...

A system is as shown in the figure. All speeds shown are with respect to ground. Then the speed of Block `B` with respect to ground is `:`

A

`5m//s`

B

`10m//s`

C

`15m//s`

D

`7.5m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
`l_(1)+2l_(2)=` constant
`:. (dl_(1))/(dt)+(2dl_(2))/(dt)=0`

`(5+5)+2(5+v_(B))=0 or v_(B)=10m//s`
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