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Simran Bhatia Grade: 11
        At  what rate should the earth rotate so that the apparent g at the equator becomes zero? What will be the length of the day in this situation?
3 years ago

Answers : (1)

Kevin Nash
askIITians Faculty
332 Points
										Sol. The apparent ‘g’ at equator becomes zero.

i.e. g’ = g – ω^2 R = 0
or g = ω^2R
or ω = √g/R = √9.8/6400 * 10^3 = √1.5 * 10^-6 = 1.2 * 10^-3 rad/s.
T = 2π/ω = 2 * 3.14/1.2 * 10^-3 = 1.5 * 10^-6 sec. = 1.41 hour
3 years ago
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