If the radius of earth contracts 1/n of its present day value, the length of the day will be approximately

If the radius of the earth contracts to half of its present radius , then the length of the day will be (if the mass of the earth remaining same)

Mass remaining constant, if the earth suddenly contracts to one third of its present radius, the length of the day would be shorted by

Mass remaining constant, if the earth suddenly contracts to one third .of its present radius, the length of the day would be shortened by

If the radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?

If the radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?

If the radius of the earth contracts to half of its present value without change in its mass, what will be the new duration of the day?