I have this problem i have been trying to solve and can't seem to get it right. The question states: The space shuttle is in orbit 396.9 km above the surface of the earth. What is the gravitational force on a 0.64 kg sphere inside the space shuttle? mass earth = 5.98x10^24 kg radius of earth = 6.37x10^6 m I've tried using the equation F= (G*M*m)/r^2 and the answer i got was about 5.57 N for the distance above earth i converted the units and added them to the earth's radius so I'm not sure what I could be doing wrong. is it possible that i am using the wrong equation all together?