The critical velocity of satellite of mass $100 k g$ moving round a planet is $20 m / s$ . If another satellite of mass $200 k g$ is kept moving in the same orbit then its critical velocity will be:

40 k m / h r

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72 k m / h r

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40 m / s

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72 m / s

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Solution

The correct option is B $72 k m / h r$

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