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Work done by an external agent in bringi...

Work done by an external agent in bringing three particles each of mass `m` at the vertices of an equilateral triangle of length `l` is

A

`(3Gm^(2))/(l)`

B

`-(3Gm^(2))/(l)`

C

`(3Gm^(2))/(2l)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
`W=U=-(3Gmm)/l=-(3Gm^(2))/l`
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