Example: consider a spherical star with a rotational period of 30 days. The star
unleashes a supernova explosion. The stellar core has mass of M, which
originally had a radius of 1.0E4 km that collapses to a neutron star of about
(A) determine the period of rotation of the neutron star.
Student flips wheel 180 degrees. (Wheel is spinning)
Calculate the angular moment