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A body with mass 1kg moves in one direct...

A body with mass `1kg` moves in one direction in the presence of a force which is described by the potential energy graph. If the body is releasd from rest at `x=2 m`, than its speed when it crosses `x=5 m`, is (Neglect dissipative forces).

A

zero

B

`1ms^(-1)`

C

`2ms^(-1)`

D

`3ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
At `x=2m, U=6J`
`:'DeltaU=DeltaKE:.(1)/(2)(2)v^(2)=6-2`
`rArrv=2m//s`
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