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Q.

A satellite is moving around the earth in a circular orbit. Radius of the orbit is r and kinetic energy is K. Another satellite is moving around the earth in circular orbit of radius 2r. Then total energy of the second satellite is

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Detailed Solution

V=GMr and K=12mV2=GMm2rFor the second satellite, V'=GM2r=V2∴ K'=12m(V')2=14mV2=K2∴ E'=−K'=−K2
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