The moon orbits the earth at a distance of 3.85x10^8 m.  The moon orbits the earth at a distance of 3.85x10^8 m. Assume that this distance is between the centers of the earth and the moon and that...

The moon orbits the earth at a distance of 3.85x10^8 m. 

The moon orbits the earth at a distance of 3.85x10^8 m. Assume that this distance is between the centers of the earth and the moon and that the mass of the earth is 5.98x10^24 kg. Find the period for the moon's motion around the earth. Express the answer in days and compare it to the lenght of a month. 

Expert Answers info

jeew-m eNotes educator | Certified Educator

calendarEducator since 2012

write1,657 answers

starTop subjects are Math, Science, and Social Sciences

The moon is rotating around earth. So in the moon there is a centrifugal force acting towards earth.

`F = mv^2/r`

m = mass of moon

r = distance between moon and earth

v = velocity of moon

Earth exerts a gravitational force on earth as given by Newtons low of gravity.

`F = G(Mm)/r^2`

(The entire section contains 137 words.)

Unlock This Answer Now



check Approved by eNotes Editorial