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A rocket, set...

Question

A rocket, set for vertical firing weighs $50 k g$ and contains $450 k g$ of fuel. Maximum exhaust velocity is $2 k m / s e c$ , what should be minimum rate of fuel burnt to just lift it launching pad

A

2 k g / s e c

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B

2.5 k g / s e c

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C

2.7 k g / s e c

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D

7.5 k g sec

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Solution

The correct option is D $7.5 k g sec$
Hence, option $(D)$ is correct answer.

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