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This problem was
suggested by Toby Crisford.
Two balls of equal radius and mass, free to roll on a horizontal plane, are
separated by a distance L large compared to their radius. One ball is solid, the
other hollow, and they are attracted by a mysterious force. How far will the
solid ball roll before it collides with the hollow ball?
Answer :
Solutions (listed by author)
Michael A.
Gottlieb (html, 3k) |