Question

A 1 : 25 model of a naval ship is towed at a velocity of 1.2 m/s to determine each of the two components of the total drag that may be experienced by the prototype. The wave-making drag of the model is duly estimated to be 0.37 kgf. What would be the wave making drag on the prototype ship?

• A. 1250 kgf
• B. 1875 kgf
• C. 5781.2 kgf
• D. 4635 kgf

Answer 1

The correct option is C 5781.2 kgf

$\frac{F_m}{F_p}={\left(\frac{1}{25}\right)}^3\Rightarrow F_p=5781.25kgf$