How to Calculate Space Shuttle Orbital Parameters?

[wondermoose]

Homework Statement

The orbit of the Space Shuttle is usually circular with an average altitude above the Earth of around 210 miles. The mass of the Space Shuttle on orbit is about 100,000 kg.

1. What is the distance of the Space Shuttle (shuttle) from the center of the Earth?
2. Using forces, calculate the velocity of the shuttle required to maintain a circular orbit.
3. How should the potential energy and kinetic energy behave throughout one orbit?

Homework Equations

K=1/2mv^2

U=-G(m1m2/r)

The Attempt at a Solution

I'm still struggling to grasp some of these concepts and wanted to get a head start with this stuff for the weekend. Anyone think they can get me started? Thanks

 

[zhermes]

We are happy to help; but you should give some of these problems a try, first. Are there any particular concepts/issues you are having trouble with---which might help you get started?