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An object of mass 2kg is moved from infi...

An object of mass `2kg` is moved from infinity to a point `P`. Initially that object was at rest but on reaching `P` its speed is `2m//s`. The then potential at `P` is .........`J//kg`.

A

`8J//kg`

B

`-2J//kg`

C

`4J//kg`

D

`-8J//kg`

Text Solution

Verified by Experts

The correct Answer is:
b
`P.E.=G.P.xxm`
`therefore" G.P."=(PE)/(m)=(-4)/(2)=-2J//kg`
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