Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Assume that a tunnel is dug along a chord of the earth, at a perpendicular distance 
from the earth's centre, where ' 
' is the radius of the Earth. The wall of the tunnel is frictionless. If a particle is released in this tunnel, it will execute a simple harmonic motion with a time period:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
If displaced from equilibrium position,
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