supose there existed a planet that went around the sun twice as fast as the earth.what would be its

Asked by  | 12th Sep, 2009, 02:01: AM

Expert Answer:

The gravitational force provides the centripetal force for orbital motion.

mV2/R = GMm/R2

R  1/V2

Rp/RE = (VE/Vp)2  

Vp = 2VE

Rp = RE/4




Answered by  | 4th Nov, 2009, 02:35: PM

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