In order for a satellite to move in a stable circular orbit of radius 6761 km at a constant
speed, its centripetal acceleration must be
inversely proportional to the square of the
radius r of the orbit. What is the speed of the satellite?

Find the time required to complete one orbit.
Answer in units of h.

The universal gravitational constant is
6.67259 × 10^−11 N · m2/kg2 and the mass of
the earth is 5.98 × 10^24 kg. Answer in units of m/s.