JEE Main 202325 Jan, Morning shiftPhysicsMediumGravitation159× since 2002
Assume that the earth is a solid sphere of uniform density and a tunnel is dug along its diameter throughout the earth. It is found that when a particle is released in this tunnel, it executes a simple harmonic motion. The mass of the particle is 100 g. The time period of the motion of the particle will be (approximately)
(Take g = 10 m s , radius of earth = 6400 km)