Homework Help: Physics

Posted by Joanna on Friday, February 4, 2011 at 4:30pm.

The mass of the Moon is 7.35 x 10^22 kg. At some point between Earth and the Moon, the force of Earth's gravitational attraction on an object is cancelled by the Moon's force of gravitational attraction. If the distance between Earth and the Moon (centre to centre) is 3.84 x 10^5 km, calculate where this will occur, relative to Earth.

Physics - Damon, Friday, February 4, 2011 at 5:14pm
put mass m in there. It will cancel of course

G m Mmoon/(3.84*10^5-r)^2 = G m Mearth/r^2

Mmoon/(3.84*10^5-r)^2 = Mearth/r^2
Physics - Joanna, Friday, February 4, 2011 at 5:49pm
oh okayy! thanks so muchhh <3

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