If the earth, were suddenly contracted to (l/n)th of its present radius without change in its mass, then what will be the effect on the duration of the day.

If the earth, were suddenly contracted to (l/n)th of its present radiu

1.	If the earth, were suddenly contracted to (l/n)th of its present radius without change in its mass, then what will be the effect on the duration of the day.
Answer» SOLUTION :The duration will become (`24//n^2`) HOUR, because lay = a constant `(2/5) MR^2 xx (2pi//T)` = a CONST, `T prop R^(2)`when it contracts, `T^(1) prop (R^(2)//n^(2)) . T. =(T//n^(2))` or `T. = (24//n^(2))`.