A tunnel is dug along a chord of the earth at a perpendicular distance `R//2` from the earth's
Channel: Doubtnut
Date: 2020-07-26

A tunnel is dug along a chord of the earth at a perpendicular distance `R//2` from the earth's centre. The wall of the tunnel may be assumed to be frictionless. A particle is released from one end of the tunnel. The pressing force by the particle on the wall, and the acceleration of the particle vary with `x` (distance of the particle from the centre) according to