Posted by Donald on Wednesday, October 3, 2012 at 11:56pm.
since the minimum distance between their centers of mass is .14m + .028m = .168m,
plug that into the usual formula.
BTW, who ever heard of a 2.8cm, 400g billiard ball? The standard size and weight are around 5.7cm and 160g.
Maybe a golf ball is 2.8cm. Dunno.
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