Question
A small sphere of radius R held against the inner surface of a smooth sphericalshell of radius 6R as shown in figure. The masses of the shell and small spheresare 4M and M respectively. This arrangement is placed on a smooth horizontaltable. The small sphere is now released. The x-coordinate of the centre of theshell when the smaller sphere reaches the other extreme position is:(A) R(C) 3R(B) 2R(D) 4RX