Question

A fishnet consists of 1-mm –diameter strings overlapped and knotted to form 1- by 1-cm squares. (a) Estimate the drag of 1 m^2 of such a net when towed normal to its plane at 3 m/s in 20 C seawater (?? =0.00107 kg/m-s, p = 1225 kg/m^3). What horsepower is required to tow 400 ft^2 of this net ?1 ibf = 4.4156 N, 550 ibf *ft/s = 1hp, 1 ft = 0.3048m ) use CD = 1 for cylinder based on frontal area.

hint;

please put the furmulas and the steps

Answer 1

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