- #1

the7joker7

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## Homework Statement

Neutron stars are extremely dense objects that are formed from the remnants of supernova explosions. Many rotate very rapidly. Suppose that the mass of a certain spherical neutron star is twice the mass of the Sun and its radius is 10.0 km. Determine the greatest possible angular speed it can have for the matter at the surface of the star on its equator to be just held in orbit by the gravitational force.

## Homework Equations

F = G*[tex]\frac{v^{2}}{r}[/tex]

## The Attempt at a Solution

The way I see it, r = 10,000 meters and mass = 3.977 *10[tex]^{30}[/tex] kilograms. So I used the equation above. to get...

F = (6.67*10^-11)*[tex]\frac{v^{2}}{10000}[/tex]

Now, I think I'm supposed to find out what F should be, and solve for V, but I'm not sure what I'm supposed to make F be.