A uniform sphere of mass M and radius R is surrounded by a concentric spherical shell of same mass but radius 2R. A point mass m is kept at a distance x(>R) in the region bounded by spheres. What is the net gravitational force on the particle?

Asked by Ishani Pandey | 4th Jan, 2013, 01:31: PM

Expert Answer:

The gravitational force on the mass will be only due to the inner sphere...but not the outer shell as the gravitational force on any mass kept inside a shell due to the shell itself is always 0.
Grav force on m due to the inner sphere=GMm/X2

Answered by  | 8th Jan, 2013, 05:34: PM

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