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August 3, 2015

Homework Help: PHYSICS HELP!

Posted by Shelby on Wednesday, October 31, 2012 at 12:25pm.

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 = 33 m and a mass of m = 415 kg. The propeller rotates at the rate of 21 rev/min. 120degree angle between blades
a) Convert the angular speed of the propeller to units of rad/s.
(b) Find the moment of inertia of the propeller about the axis of rotation.___J s2
(c) Find the total kinetic energy of the propeller.______ J

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