Two satellites A and B go round a planet P in circular orbits having radii 4 R and R respectively. If the speed of satellite A is 3 V , the speed of the satellite B will be.

Question

Two satellites A and B go round a planet P in circular orbits having radii 4 R and R respectively. If the speed of satellite A is 3 V , the speed of the satellite B will be., 12 V, 6 V, 4 3 V, 3 2 V

MARKS App · Accepted Answer

v = G M R ⇒ v A v B = R B R A = R 4 R = 1 2 ∴ v A v B = 3 V v B = 1 2 ∴ v B = 6 V

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