CBSE Class 11-science Answered
how much quicker than present must the earth revolve on its axis to make bodies at the equator experience weightlessness?and what will be the duration of the day ?
Asked by sunakshi | 05 Nov, 2013, 04:00: PM
Expert Answer
The speed is given as
v = rω = 2πr/T
Thus, current speed of earth is
In order to feel weightless, the gravitational force should be equal to the centripetal force.
Therefore, the new speed is
Thus, the earth has to move 17 times faster than present speed.
For this new speed, the duration of the day will be
Answered by Romal Bhansali | 10 Nov, 2013, 01:15: PM
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