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Hello, is it possible to have help with this question?

Hello, is it possible to have help with this question?-example-1
User Gretta
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1 Answer

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We know that the planets in the solar system orbit the sun in their elliptical paths. According to Kepler's third law on planetary motion


((T_A)/(T_B))^2=((r_A)/(r_B))^3

From equation (1), the period of revolution of Moon B is computed as:


\begin{gathered} T_B=((4r)/(r))^{(3)/(2)}\cdot T_A \\ T_B=(4)^{(3)/(2)}20d \\ T_B=160\text{ days} \end{gathered}

User Vmeln
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