Energy of a satellite in circular orbit is E0. The energy required to move the satellite in a circularorbit of 3 times the radius of the initial orbit is
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a
23E0
b
2E0
c
E03
d
32E0
answer is A.
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Detailed Solution
Ei=E0=-GMm2r or Ef=-GMm2(3r)=-GMm6r∴W=Ef-Ei=-GMm3r=23E0