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The gravitational field intensity at a p...

The gravitational field intensity at a point `10,000km` from the centre of the earth is `4.8Nkg^(-1)`. The gravitational potential at that point is

A

`-4.8xx10^(7)Jkg^(-1)`

B

`-2.4xx10^(7)Jkg^(-1)`

C

`4.8xx10^(6)Jkg^(-1)`

D

`3.6xx10^(6)Jkg^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Gravitational field intensity, `E=(GM)/(R^(2))`
Gravitational potential, `V=-(GM)/( R)`
`:. (V)/( E)=-R`
` or V=-ER=-4.8xx10,000xx10^(3)=-4.8xx10^(7)Jkg^(-1)`
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