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Gravitational potential difference betwe...

Gravitational potential difference between a point on surface of planet and another point 10 m above is 4J/kg. Considering gravitational field to be uniform, how much work is done in moving a mass of 2kg from the surface to a point 5 m above the surface?

A

4J

B

5J

C

6J

D

7J

Text Solution

Verified by Experts

The correct Answer is:
A
Gravitational field `g=-(DeltaV)/(Deltax)=-((-4)/(10))=(4)/(10)J//kg` m
Work done in moving a mass of 2kg from the surface to a point 5m above the surface
`W=mgh=(2kg)((4)/(10)(J)/(kgm))(5m)=4J`
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