Posted by Renee =D on Saturday, April 11, 2009 at 7:29am.
The mass of the Moon is 7.35x10 to the 22nd Kg. At some point between the Earth and the Moon, the for 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 3.84x10 to the 5th km, calculate where this will occur, relative to Earth.

Physics  drwls, Saturday, April 11, 2009 at 7:52am
Let X be the distance from Earth. You will need the mass of the Earth also. Call it M and the moon's mass m.
Let D = 3.84*10^5 km
For the forces to be equal,
G M/x^2 = G m/(Dx)^2
G (the universal law of gravity constant) cancels out.
Solve for x/D in terms of M/m
[(Dx)/x]^2 = (D/x 1]^2 = m/M
D/x 1 = sqrt (m/M)
Answer This Question
Related Questions
 Physics  The mass of the Moon is 7.35 x 10^22 kg. At some point between Earth ...
 physics  Which of the following correctly describe the gravitational attraction...
 Physics  When a spacecraft travels from the Earth to the Moon, both the Earth ...
 physics  When a spacecraft travels from Earth to the Moon, the gravitational ...
 physics  In the Earthâ€“Moon system, there is a point where the gravitational ...
 physics  Suppose that the attraction between the moon and the earth were due to...
 PHYSICSS!!!  still cant get this one? so damon i know you wanna help! or ...
 EARTH SCIENCE  Cumulus and stratus clouds belong to which cloud group? A. ...
 Physics  Many astronomers argue that the Earth and Moon should be considered a...
 Physics  The earth has about 80 times the mass of the earthâ€™s moon. The ...
More Related Questions