Assume that the plane is on the ground, and model each of its two propeller blades as a re...

Assume that the plane is on the ground, and model each of its two propeller blades as a rectangular plate of mass m = 29 kg, length L = 137 cm, and width ω = 20 cm. If the engine torque MO applied to the propeller shaft is 410 N·m, determine the time it takes for the blades to achieve an angular speed of 2000 rpm if the blades start from rest. What would be the required time if, instead, the blades were modeled as thin rods of length L and mass m?

Figure P7.41