A satellite is placed in a geosynchronous orbit. In this equatorial orbit with a period of 24 hours, the satellite hovers over one point on the equator. Which statement is true for a satellite in such an orbit?
a. There is no gravitational force on the satellite. b. There is no acceleration toward the center of the Earth.
c. The satellite is in a state of free fall toward the Earth.
d. There is a tangential force that helps the satellite keep up with the rotation of the Earth.
e. The force toward the center of the Earth is balanced by a force away from the center of the Earth.
Question 2
What is the gravitational force on a 20-kg satellite circling the Earth (radius = 6.4 106 m, mass = 6.0 1024 kg) with a period of 5.0 h?
a. 88 N
b. 55 N
c. 36 N
d. 98 N
e. 18 N