A flagpole 20m high with a cross section shape of a square with 1000mm sides is exposed to sea level storm winds at 50m/s. Estimate the bending moment about the bottom of the flag (Sea-level conditions are: Temperature To=30 °C, and P. 101325 Pa and the absolute viscosity of air is u=1.78 x 10-5 kg/(m.s). Co is determined from the table below if Re > b) 10.

A water jet 3 in in diameter strikes a concrete (SG =2.3)slab which rests freely on a level fl oor. If the slab is 1 ft wide into the paper, calculate the jet velocity which willjust begin to tip the slab over.

Air at 20⁰c and 1 ATM flows over a flat plate, v= 35 m/s. The plate is 75 cm long and guarded at 60⁰c. Suppose the depth of one Units on Z, count the transfer of Calor from that plate.

2. The table below shows experimental data for the shape and pressure distribution on the upper and lower surface of an airfoil at zero angle of attack. X 0 0.25 0.5 0.75 1 Yu 0 0.0952 0.0922 0.0588 0 Fx = dYu dx 5 Y₁ 0 -0.0254 -0.0144 -0.0052 0 PL Pd) d: dx Y = Yu (x) Calculate the drag and lift force on the airfoil by numerically evaluating the integrals = S₁² ( P₂₁ = ['(P₁ - F (P₁ - Pu)dx 0 y = Y₂ (x) Pu 1.000 -1.640 -0.786 -0.212 0 Fy x Pi 1.000 0.589 0.426 0.322 0 Use finite difference approximations of the derivatives and the composite Simpson's rule to evaluate the integrals. Hint: Use central differences to estimate the derivatives wherever possible since they are more accurate than forward or backward differences.

A ship 50 m long, with a wetted area of 800 m2, has the hullshape tested in Fig. There are no bow or stern bulbs.The total propulsive power available is 1 MW. For seawaterat 20°C, plot the ship’s velocity V kn versus power Pfor 0 < P <1 MW. What is the most efficient setting?