If earth shrinks then the duration of day

If most of the population on earth is migrated to poles of the earth then the duration of a day

If the earth loses its atmosphere sudenly, then the duration of day will :-

If the earth loses its atmosphere sudenly, then the duration of day will :-

If all objects on the equator of earth feels weightless then the duration of the day will nearly become

If all objects on the equator of earth feels weightless then the duration of the day will nearly become

A body weighs 72 N on surface of earth feel weightless then the duration of the day will nearly become

If all the ice on the polar caps of the earth melts, due to global warming then the duration of the day will be

A body weighs 72 N on surface of earth feel weightless then the duration of the day will nearly become

If the mass of the earth is kept constant and its radius is made half, then the duration of the day will be where T is the present duration of the day.