Commercially available large wind turbines We have blade span diameters as large as 100 m...

Commercially available large wind turbines We have blade span diameters as large as 100 m and generate over 3MW of electric power at peak design conditions. Consider a wind turbine with a 90-m blade span subjected to 25-km/h steady winds. If the combined turbine- generator efficiency of the wind turbine is 32 percent, determine (a) the power generated by the turbine and (b) the horizontal force exerted by the wind on the supporting mast of the turbine. Take the density of air to be 1.25 kg/m3, and disregard frictional effects.