A solid sphere of mass M and radius a is surrounded by a uniform concentric spherical shell of thickness 2 a and mass 2 M . The gravitational field at distance 3 a from the centre will be:

Question

A solid sphere of mass M and radius a is surrounded by a uniform concentric spherical shell of thickness 2 a and mass 2 M . The gravitational field at distance 3 a from the centre will be:, G M 9 a 2, G M 3 a 2, 2 G M 3 a 2, 2 G M 9 a 2

MARKS App · Accepted Answer

Gravitational field at point P , = GM 3 a 2 + G 2 M 3 a 2 = GM 9 a 2 + 2 GM 9 a 2 = GM 3 a 2

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