Question

A particle of mass m is situated at the centre of a spherical shell of same mass and radius a the gravitational potential at a point situated at a/2

Answer 1

The gravitational potential at the point P due to the particle at the centre is
 V1 = – GM /a/2 =−2GM/a


the potential at P is due to sell,.
V2= -Gm/a

The net potential at P is V1 + V2 = – 3GM/a

Answer 2

Explanation:

net potential =

$-3 \frac{gm}{a}$