Question

Two concentric shells have masses m and m and their radii are r and r respectively, where r > r. What is the gravitation potential at their common centre?

Answer 1

Answer:

Gravitational potential at the centre of a spherical shell= Gravitational Potential on surface

=−G×

radius

mass of shell

∴ gravitational potential at their common center =−G[

R

M

+

r

m

]

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