A force of 5.25 newtons acts on an object of unknown mass at a distance of 6.9..*.108 meters from the center of Earth. To increase the force to 2.5 times its original value, how far should the object be from the center of Earth?

Question

anonymous · Answer

Are we talking gravity here?

F is proportional to 1/r^2

to get an increase of 2.5 times original value, need smaller r by factor sqrt(2.5)

take original distance and divide it by sqrt(2.5)