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NEET 2010 (AIPMT, Mains) · Satellite Energy & Weightlessness

Satellite Energy & Weightlessness question from NEET 2010 (AIPMT, Mains)

Q34NEET 2010 · AIPMT · MAINSMedium

Satellite Energy & Weightlessness

The additional kinetic energy to be provided to a satellite of mass m revolving around a planet of mass M, to transfer it from a circular orbit of radius R1 to another of radius R2(R2 > R1) is

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Answer: (d)

Energy in an orbit of radius $r$ : $E = -\frac{GMm}{2r}$ .
Energy to be supplied $= E_2 - E_1 = \frac{GMm}{2}\left(\frac{1}{R_1} - \frac{1}{R_2}\right)$ .
So the answer is (d).

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