1. The mass of Venus is 81.5% that of the earth, and its radius is 94.9% that of the earth.(adsbygoogle = window.adsbygoogle || []).push({});

Compute the acceleration due to gravity on the surface of Venus from these data.

What is the weight of a 5.00-kg rock on the surface of Venus?

2. Venus orbits the sun in a nearly circular orbit. The radius of the orbit of Venus is 1.08x10^11 m, the period of Venus is 224.7 days(1.94 x 10^7 s)

Calculate the mass of the sun.

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** I know F_grav = m * g and F_grav = GM_Earth*m/d^2

M_Earth = 5.98 x 10^24 kg and R_Earth = 6.38 x 10^6 m

I conclude: M_Venus = 4.88x10^24 kg and R_Venus = 6.06 x 10^6 m

Please help. I'm stuck

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# Venus and gravity

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