physics
posted by cody .
A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.31 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?

That would be when they are in contact, with the centers separated by a distance
d = r1 + r2 = 0.148 m
For that separation,
F = G m1*m2/d^2
where G is the universal constant of gravity,
G = 6.67*10^11 N*m^2/kg^2
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