Question #1359

The planet Mars has a mass of 6.1 × 1023 kg
and radius of 3.1 × 106 m.
What is the acceleration of an object
in free fall near the surface of Mars?
The value of the gravitational constant is
6.67259 × 10−11 N · m2/kg2.
Answer in units of m/s2.

Expert's answer

The gravitation acceleration can be written as

g = GM/R^{2} = 6.67259 × 10^{−11} * 6.1 × 10^{23} / (3.1 × 10^{6})^{2} = 4.24 m/s^{2}.

g = GM/R

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