Chapter 11, Problem 53P

The Sun’s mass is $\text{2}{\text{.0×10}}^{\text{30}}\text{kg}$ , its radius is $\text{7}{\text{.0×10}}^{\text{5}}\text{km}$ , and it has a rotational period of approximately 28 days. If the Sun should collapse into a white dwarf of radius $\text{3}{\text{.5×10}}^{\text{3}}\text{km}$ , what would its period be if no mass were ejected and a sphere of uniform density can model the Sun both before and after?