Do bowling balls float?

The largest bowling ball allowed by USBC or FIQ has a circumference of 27 inches, equivalent to a diameter of 21.9 centimetres and a volume of 5447 cubic centimetres. Whilst the size of a bowling ball is fixed, its weight can vary, typically between six and sixteen pounds (2.7 to 7.3 kilograms).

With a fixed volume and a changing mass the density (mass per unit volume) of a bowling ball will change, and as a result some bowling balls float, and some sink.

The low weight balls (including the 12 lb ball at a density of 999.6 kg/m3) all float. Only the 14 lb and 16 lb balls will sink.

One thought on “Do bowling balls float?

  1. The 14lber should float in the dead sea from your graph .. not dumb at all .. I would have thought those guys would sink .. but it’s been a while since I’ve held one :P

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