A solid sphere of mass M and radius R is surrounded by a spherical shell of same mass
Channel: Doubtnut
Date: 2020-02-02

A solid sphere of mass M and radius R is surrounded by a spherical shell of same mass M and radius 2R as shown. A small particle of mass m is released from rest from a height `h(lt lt R)` above the shell. There is a hole inn the shell. QIn what time will it enter the hole at A