1.) Phobos and Deimos, the two satellites of Mars, have orbits with average radii of 9380 km and 23,500 km, respectively. The period of Phobos is 0.319 earth days. What is the period of Deimos?
2.) The moons mass is (7.3 x 10^22) kg, and the average radius of its orbit is (3.8 x 10^8 ) m. At what point could an object be placed between the earth and the moon where it would expirience no resultant force? (neglect the gravitational attractions of the sun and the other planets.)
3.) The moon circles the earth every 27.3 days in an orbit of radius *3.8 x 10^8) m, and the earth circles the sun every 365 days in an orbit of radius (1.5 x 10^11) m. From these figures, without knowing the value of G, find the ratio between the masses of the sun and the earth.
4.) Show that the period of a satellite orbiting a planet just above the surface depends only on G and the planents density p (rho). (density is mass per until volume; the volume of a sphere of radius r is 4(pi)(r)^3 / 3
2007-03-29
09:35:32
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2 answers
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asked by
Tyler D
1
in
Astronomy & Space