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The kinetic energy needed to project a b...

The kinetic energy needed to project a body of mass m from the surface of earth (radius R ) to infinity is

A

`(mgR)/(4)`

B

2mgR

C

mgR

D

`(mgR)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
C
`(1)/(2)mv_(e )^(2)=(1)/(2)m.2gR=mgR`
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