Posted by **basher** on Friday, March 9, 2012 at 10:21pm.

Physics Gravitation help...?

hello People

i need some help with my physics revision sheet. i cant seem to get my head round it. if anyone could help by telling me how to work it out to get the right answer i would be grateful...

answers would also be appreciated.

ok here is the question:

mass of the earth = 5.97 * 10^24 kg

Polar Radius of Earth = 6.36 * 10^6 m

1) calculate the net force on a 1.08 * 10^3 Kg Satellite when it is in a polar orbit 2.02 * 10^7 m above the earths orbit....

2)show that the only stable orbit for the satellite orbiting at an altitude of 2.02 * 10^7 m has a period of appoximatly 12 hours.

3) for any object orbting around a primary body R^3 T^2

where R is the radius of the orbit and T is the time period for the orbit.

show that thi is true and in doing so:

- state the conditions required for a stable orbit

- show that the conditions do not depend on the mass of the orbiting object.

4) discuss the particular requirements for an orbit that will keep the a satellite vertically above a certain point on earths surface.

## Answer This Question

## Related Questions

- Grammar and Composition - Hi, I have started working on the Phone Book Character...
- physics - so important - In which of these cases is a youngster doing work in ...
- Physics / Astronomy - Here is my question: Consider the bending of light by the ...
- com220 - While cyclical revision is obviously more time-consuming than holistic ...
- work (physics) - a 25 kg object is accelerating from rest to a distance of 6 m ...
- physics - Proponents of astrology claim that the positions of the planets at the...
- PHYSics PLEASE I NEED HELP - wally holds a pillow over his head for an hour does...
- PHYSICS - Give some examples of applications that resulted from work done by ...
- Science-Physics: Space Station - Hello, I am having trouble with this physics ...
- physics - Ten bags of top soil, each weighing 180 N, are placed on a 2.90-m long...

More Related Questions