The mass of the Moon is 7.4 ˛ 1022 kg and its mean radius is 1.75 ˛ 103 km. What is the acceleration due to gravity at the surface of the Moon?

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Newton's law of universal gravitation: Every particle in the universe attracts every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distances between them. This force acts along the line joining the two particles.
 


The mass of the Moon is 7.4 ˛ 1022 kg and its mean radius is 1.75 ˛ 103 km. What is the acceleration due to gravity at the surface of the Moon?