Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a ?neutron star?. The density of a neutron star is roughly 1014 times as great as that of ordinary solid matter. Suppose we represent the star as a uniform, solid, rigid sphere, both before and after the collapse. The star’s initial radius was 7.0 X 105 km (comparable to our sun); its final radius is 16 km. If the original star rotated once in 30 days, find the angular speed of the neutron star.

Solution 41E Step 1 of 1: For a uniform sphere and an axis through its center, 2 2 I = 5R The moment of inertia is proportional to the square of the radius, and so the angular velocity will be proportional...