Published by:
CGP EDU Academic Team
Published on: August 13, 2026
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 
. The time period of the motion of the particle will be (approximately)
(Take 
, radius of earth 
)
Text Solution
Verified by ExpertsThe correct answer is:
D
Inside earth, force is given by 
And 
(on surface of earth) 
minutes
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