Question

The radius of planet A is double the radius of planet B. If the mass of A is MA, what must be the mass of B so that the value of g on B is double that of its value on A?


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Answer 1

Explanation:

$answer$⤵️

$g = \frac{gm}{ {r}^{2} } \\ ⟹ \: m = \frac{g {r}^{2} }{g} \\ here, \frac{ga}{gb} = \frac{1}{2} \\ and \frac{rb}{ra} = 2 \\ ⟹ \frac{ma}{mb} = \frac{ga}{gb} ( \frac{rb}{ra} {)}^{2} \\ ⟹ \frac{mb}{ma} = \frac{1}{2} (2 {)}^{2} \\ ⟹ma = 2ma$

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Answer 2

ye le dpzz

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