Solve this: Q 31 A particle would take a time t to move down a straight tube from the - Physics - Gravitation

Question

Solve this:
Q 31 A particle would take a time t to move down a straight tube
from the surface of earth (supposed to be a homogeneous sphere) to
its centre If gravity were to remain constant, then the time would
be t The ratio of t/t' will be
(a) π 2 2
(b) π 2
(c) 2 π
(d) π 2

Arjun Gupta · Accepted Answer

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Solve this: Q.31. A particle would take a time t to move down a straight tube from the surface of earth (supposed to be a homogeneous sphere) to its centre. If gravity were to remain constant, then the time would be t. The ratio of t/t' will be (a) π 2 2 (b) π 2 (c) 2 π (d) π 2