Question

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?

Answer 1

The attractive force between the earth and the object is:\[F=G \frac{ m_1m_2 }{ r^{2} }\]As G, the mass of the earth and that of the object are constant, you can calculate how far the object should be without knowing those values.

Answer 2

G is a constant look it up on google