Question

There is a wind turbine that has three propeller blades (can be approximated as thin rods)...

There is a wind turbine that has three propeller blades (can be approximated as thin rods) that are 10.0kg in mass and 4.00m in length. The generator is not hooked up, so the blades can move freely. This means the only torque on the blades comes from the wind. The wind starts up and the blades go from rest to 3.00rad/s.

a. What is the angular acceleration of the turbine blades?

b. What is the moment of inertia (I) of the turbine?

c. What net torque on the turbine made the blades go from rest to 3.00rad/s in 60s?

d. What is the rotational kinetic energy of the turbine when the blades are traveling at 3.00rad/s?

e. What is the speed (in m/s) at the tip of the blades?

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I have taken the value of time 10 seconds for part A which is missing in problem.

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