Question

Calculate the power N [W] necessary to maintain a constant speed of a rigid body with the dimensions shown in the figure, completely immersed, moving in a liquid with a density ofp [kg/m'] and a kinematic viscosity coefficient v[m2/s] at the speed v [m/s]. For the calculations,take: \rho=1025\left[\mathrm{~kg} / \mathrm{m}^{3}\right] v=10^{-6}\left[\mathrm{~m}^{2} / \mathrm{s}\right] v=10=0,2 \cdot N r[\mathrm{~m} / \mathrm{s}] D=0,8+0,2 \cdot \operatorname{Nr}[m] L=2+N r[m] C_{x}=0,025

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