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Question
A particle of mass M is placed at the centre of a uniform spherical shell of mass 2M and radius R. The gravitational potential on the surface of the shell is
A particle of mass M is placed at the centre of a uniform spherical shell of mass 2M and radius R. The gravitational potential on the surface of the shell is
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Solution
The correct option is B
Potential due to particle V1=−GMR
and potential due to shell itself V2=−2GMR
∴ Total potential is V=V1+V2=−3GMR
Potential due to particle V1=−GMR
and potential due to shell itself V2=−2GMR
∴ Total potential is V=V1+V2=−3GMR