In: Physics
1. Kepler’s 3rd law.
(a) In an otherwise empty universe, two rocks of 5 kg orbit each other at a distance of 1m. What is their orbital period?
(b) The period of the Martian moon Phobos is 0.3189 d and the radius of the orbit is 9370 km. What is the mass of Mars?
a)orbital speed can be find using below formula from Kepler's 3rd law
b)mass of Mars can be calculate using below formula from Kepler's 3rd law