Question

Hollow spherical shell is compressed to half its radius . the gravitational potential at the centre will be:- increase, decrease or same. Answer this with complete explanation

Answer 1

AS THE SHELL IS COMPRESSED IT’S MASS REMAINS THE SAME WHILE THE RADIUS IS HALVED.i.e THE HAT FORCES ARE ONLY ATTRACTIVE.

NEW POTENTIAL WILL BE-2GM/R INSTEAD OF -GM/R.THE POTENTIAL IS DOUBLED .NEGATIVE SIGN INDICATES T