Posted by **mymi** on Sunday, October 30, 2011 at 8:58pm.

An asteroid is discovered to have a tiny moon that orbits it in a circular path at a distance of 122 km and with a period of 43 h. The asteroid is roughly spherical (unusual for such a small body) with a radius of 19 km.

(a) Find the acceleration of gravity at the surface of the asteroid.

and

(b) Find the escape velocity from the asteroid.

I can find the escape velocity once I calculate part a and for part a I know the formula, but how do I find M to plug in?

## Answer this Question

## Related Questions

- physics - Consider an asteroid with a radius of 15.5 km and a mass of 3.46E+15 ...
- Physics - The asteroid belt circles the sun between the orbits of Mars and ...
- Physics - Asteroid satellite: While on its way to Jupiter in 1993, the Galileo ...
- Physics - The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion...
- physics - The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion...
- physics - The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion...
- physic - Between the orbits of Mars and Jupiter, several thousand small objects ...
- PHS 105 - At a particular instant, two asteroids in inter-stellar space are a ...
- physics - An asteroid, whose mass is 2.0 10-4 times the mass of Earth, revolves ...
- physics - the near earth asteroid Rendezvous (NEAR), after travelling 2.1 ...

More Related Questions