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

Options

A. `2 sqrt((hR^(2))/(GM))`
B. ` sqrt((2hR^(2))/(GM))`
C. `sqrt((hR^(2))/(GM))`
D. None of these

Answer

A