Posted by **piyar** on Monday, April 30, 2012 at 3:41am.

two planets of mass "m" and "M" respectively. Have centre to centre seperation of "R" . At what distance from the centre of the planet of mass "M" do the gravitational force of planets cancel each other??????? plz urgent help me?

- physics -
**Elena**, Monday, April 30, 2012 at 1:41pm
G•m(o)•M/x^2 = G•m(o)•m/(R-x)^2,

m/M = (R-x)^2/x^2,

Since all numbers are positive,

sqrt(m/M) = (R/x) -1.

x = R/[1 +sqrt(m/M)]

## Answer this Question

## Related Questions

- al mustafa publick school - two planets of masses m and respectively.have a ...
- physics - two planets of masses "m" and "M" respectively. have a center to ...
- physics - two planets of masses "m" and "M" respectively. have a center to ...
- physics - The physics of gravity and satellite motion around Jupiter. A ...
- physics - One of the moons of Jupiter is Io. The distance between the centre of ...
- math - A perfectly cylindrical container standing upright with a top and bottom...
- Engineering Maths - A perfectly cylindrical container standing upright with a ...
- gr 11 physics - as a rocket carrying a space probe acceleraes away from earth ...
- Maths - A perfectly cylindrical container standing upright with a top and bottom...
- Physics - The mass of the Moon is 7.35x10 to the 22nd Kg. At some point between ...

More Related Questions