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

An object of mass 2 kg is moved from infinity to a point P. Initially that object was at rest but on reaching P its speed is 2 m/s. The work done in moving that object is `-16J`. Then potential at P is

A

8 KJ/kg

B

`-8J//kg`

C

`4J//kg`

D

`-4J//kg`

Text Solution

Verified by Experts

The correct Answer is:
b
`"PE = work done"`
`"E = -16J`
`PE=G.P.xx"mass"`
`16=G.P.xx2`
`G.P.=(16)/(2)="8J/kg."`
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