Homework Help: Physics

Posted by Anonymous on Sunday, October 24, 2010 at 9:44pm.

A. Use the relation 2
m
m
m
GM
g
R
儹 to find the acceleration due to gravity on the surface
of the Moon. You can use the following data:
Mass of the Moon m M = 7.35 ⊙ 1022 kg. Radius of the Moon m R = 1.74 ⊙ 106 m.
B. How does this value compare with the acceleration due to gravity g 儹 9.8m s2 on
the Earthˇs surface?
C. The center-to-center distance between the Earth and the Moon is 3.85 ⊙ 108 m.
Calculate the orbital speed of the Moon as it revolves round the Earth.
Also estimate the period of Moonˇs orbit from the given data. Express your
answer in days for this part.
(Mass of the Earth E M = 5.97 ⊙ 1024 kg.)

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