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View Full Version : Rate at which moon obits the earth assuming distance between moon and earth is 382,00


rlhicks
Mar 31, 2008, 01:24 PM
What is the rate that the moon orbits the earth assuming the distance between the moon and the earth is 382,000,000 meters. Should I derive from Distance=RatexTime?

Capuchin
Mar 31, 2008, 01:34 PM
There are 2 ways, depending on what level you're at:

1. Realise that the centripetal force for the moon is equal to the gravitational force between the moon and Earth.

2. you can use s = vt as you can work out the distance and you know the time.

rlhicks
Mar 31, 2008, 01:57 PM
this is just a basic engineering thought problem at ITT-Technical Institute and that is the only information to work with and they want us to use D=RxT

Capuchin
Mar 31, 2008, 02:37 PM
Well, work out what d is from the formula for circumference of the circle, you know what t is, I don't see where you are having difficulty?