Question

Two masses m1 and m2 exert a gravitational force of 20 N onto each other when they are 4 m apart.

At what distance should they be to exert a force of 5 N onto each other?


64 m

16 m

8 m

1 m

Answer 1

since it's an inverse square law,
1/4 the force, so twice the distance: 8m

Answer 2

1. 48N
2.10N
3. -3.15*10^-12N
4. The acceleration depends on both the charge and the mass
5. 8m