The force of gravitational attraction is represented by the equation
where F is the magnitude of the gravitational attraction on either body, m1 and m2 are the
masses of the bodies, r is the distance between them, and G is the gravitatio
1. What force is needed to make an object move in a circle?
a) kinetic friction
b) static friction
c) centripetal force
2. How many revolutions per minute must a circular, rotating spacestation of radius 1000 m rotate to p