Question

Fluid Mechanics

A football, meant to be thrown at 60 mih in sea-level air ip - 1.22 kg/m'. u 1.78 E-5 N m), is to be tested using a one-quarter scale model in a water tunnel (p998 kg/m'. u = 0.0010 N - s/m'). For dynamic similarity,what is the ratio of prototype force to model force?(a) 3.86:1, (b) 16:1, (e) 32:1. (d) 56:1, (e) 64:1


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