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In previous problem, find the work done ...

In previous problem, find the work done by external agent.

A

`40J`

B

`-40J`

C

zero

D

`+10J`

Text Solution

Verified by Experts

The correct Answer is:
B
Since, particle is shifted slowly. So, change in kinetic energy is zero. According to work-energy theorem
`W +W_(ext) = 0`
`W_(ext) =- W =- 40 J`
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