36. Two Earth satellites, A and B, of same mass m, are to be launched into circular orbits about Earth’s center. Satellite A is to orbit at an altitude of Earth’ radius, hA = RE. Satellite B is to orbit at an altitude of 2hA. The ratio of the total energy of satellite B to that of satellite A is,
(A) 1/2
(B) 2/3
(C) 2
(D) 3/2
(E) 1/4
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統計: A(4), B(42), C(1), D(8), E(6) #2356597
統計: A(4), B(42), C(1), D(8), E(6) #2356597
詳解 (共 2 筆)
#4744591
total energy of satellite = -GMm/2r 與r成反比
B/A=2RE/3RE=2/3
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