Question

If the gravity of earth becomes zero then duration of day becomes

Answer 1

The answer to the question is: If the Earth rotated about 17 times faster than it currently does, equator inhabitants would be weightless indeed. A day-night-cycle would last only 1.4 hours instead of the familiar 24 hours – in other words: 1 hour and 24 minutes. The equatorial speed around the Earth’s center would increase from normal 1668 km/h to almost 28500 km/h (from 1036 mph to 17700 mph).