GravitationHard

Question

The rotation of the Earth having radius R about its axis speeds upto a value such that a man at latitude angle 60o feels weightless. The duration of the day in such case will be

Options

A.
B.
C.
D.

Solution

g′ = g - ω2r cos 60
g′ = g - ω2R cos2 60
g′ = 0, g = ω2R cos2 60

= ω , t =

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