1)Suppose we have two planets with the same mass, but the radius of
the second one is twice the size of the first one.
How does the free-fall acceleration on the second planet
compare to the first planet?
2) Consider two celestial objects with masses m1 and m2 with a
separation distance between their centers r.
If the separation distance r were to halve (1/2), what would
happen to the magnitude of the force of attraction?
3) Consider two celestial objects with masses m1 and m2 with a
separation distance between their centers r.
If the first mass m1 were to double and the second mass m2
were to halve (1/2), what would happen to the magnitude of the
force of attraction?
4) Consider two celestial objects with masses m1 and m2 with a
separation distance between their centers r.
If the separation distance r were to triple, what would happen
to the magnitude of the force of attraction?