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Phobo is a satellite of Mars. The period...

Phobo is a satellite of Mars. The period of its revolution around Mars is 0.319 days and its mean distance from Mars is `9.519xx10^(6)m`. Assuming that the mass of Phobos is negligible compared to that of Mars, calculate the mass of Mars. Take `G=6.668xx10^(-11)Nm^(-2)kg^(-2)`

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The correct Answer is:
`5.677xx10^(24)kg`
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