- #1
Irishtank
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Homework Statement
The force of attraction between Mars and its moon, Phobos, which has a mass of 1.072 x 10^16kg and a radius of 11.1km is 5,18 x 10^15 N
Find the height of Phobos above the surface of the moon.
Homework Equations
f=G(m1)(m2)/d^2
d(mars-phobos surfaces)= d (moon-phobos centres) - r (moon) - r(phobos)
The Attempt at a Solution
distance between the centres of Mars and phobos= 9.37 x 10^6m
radius of moon= 1.74 x10 ^6m
I don't know how they get the answer 5.95 x 10^6m