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## Homework Statement

A bowling ball (mass = 7.2 kg, radius = 0.13 m) and a billiard ball (mass = 0.40 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?

## Homework Equations

F = G(m1m2/r^2)

## The Attempt at a Solution

Im confused about the radius portion of the problem. Shouldn't you add up the radius of both (0.028 + 0.13) and use that answer in the equation?

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