A typical propeller of a turbine used to generate electricity from the wind consists of three blades as in the figure below. Each blade has a length of L = 30 m and a mass of m = 400 kg. The propeller rotates at the rate of 28 rev/min. 120% ----- (a) Convert the angular speed of the propeller to units of rad/s. rad/s (b) Find the moment of inertia of the propeller about the axis of rotation. (Treat each blade as a long, thin rod rotating about an axis perpendicular to its length and passing through its end.) J.s2 (c) Find the total kinetic energy of the propeller.

College Physics
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Chapter8: Rotational Equilibrium And Rotational Dynamics
Section: Chapter Questions
Problem 67AP: Additional Problems A typical propeller of a turbine used to generate electricity from the wind...
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A typical propeller of a turbine used to generate electricity from the wind consists of three blades as in the figure below. Each blade has a length of L = 30 m and a mass of m = 400 kg.
The propeller rotates at the rate of 28 rev/min.
120%
(a) Convert the angular speed of the propeller to units of rad/s.
rad/s
(b) Find the moment of inertia of the propeller about the axis of rotation. (Treat each blade as a long, thin rod rotating about an axis perpendicular to its length and passing
through its end.)
(c) Find the total kinetic energy of the propeller.
Transcribed Image Text:A typical propeller of a turbine used to generate electricity from the wind consists of three blades as in the figure below. Each blade has a length of L = 30 m and a mass of m = 400 kg. The propeller rotates at the rate of 28 rev/min. 120% (a) Convert the angular speed of the propeller to units of rad/s. rad/s (b) Find the moment of inertia of the propeller about the axis of rotation. (Treat each blade as a long, thin rod rotating about an axis perpendicular to its length and passing through its end.) (c) Find the total kinetic energy of the propeller.
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