Homework Help: Physics [No Math]

Posted by Mikey on Sunday, December 2, 2012 at 6:44pm.

When calculating weights away from Earth's surface, for example:

At 6.38x10^3 km away from Earth's surface a spacecrafts weight is d=rE+rE
Then F=(1/4)(SpaceCraftWeight)

Why is the distance 2rE?

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