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Satellites

Two satellite...

Question

Two satellites X and Y move round the earth in the same orbit. The mass of B is twice that of A. Then

A

v_{A} = v_{B}

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B

K E_{A} = K E_{B}

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C

(K E + P E)_{A} = (K E + P E)_{B}

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D

P E_{A} = P E_{B}

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Solution

The correct option is B $v_{A} = v_{B}$
Orbital speed does not depend on the mass of satellite and is equal to
$V = \sqrt{\frac{G M_{p l a n e t}}{R}}$

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