If the earth expands suddenly to twice its diamteter, what would be the length of the day ?

If radius of the earth is doubled without change in its mass, what will be the length of the day?

The sun rotates around itself once in 27 days. If it were to expand to twice its present diameter, what would be its new period of revolution ?

If earth were to shrink suddenly, what would happen to the length of the day ?

If earth were to shrink suddenly, what would happen to the length of the day?

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 earth suddenly contracts to 0.5 times of its present radius, then the length of the day becomes