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A smooth block of mass m moves up from b...

A smooth block of mass `m` moves up from bottom to top of a wedge which is moving with an acceleration `a_(0)`. Find the work done by the pseudo force measured by the person sitting at the edge of the wedge.

A

`(ma_0l)/2`

B

`(3ma_0l)/2`

C

`0`

D

`ma_0l`

Text Solution

Verified by Experts

The correct Answer is:
D
The observer moving with wedge will observe a pseudo force `ma_0` in the direction opposite to `veca_0`.
` `
Since `vecF_(ps)=-vecma_0` is a constant force, therefore,
`W_(ps)=vecF_(ps)*vecS=-(ma_0)l*cos180^@=ma_0l`
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