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    Determining Inertia and Rotational Kinetic Energy

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    A helicopter has two blades (see figure), each of which has a mass of 220 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 55 rad/s. (a) What is the total moment of inertia of the two blades about the axis of rotation? (b) Determine the rotational kinetic energy of the spinning blades.

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    https://brainmass.com/physics/energy/determining-inertia-rotational-kinetic-energy-283129

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    This solution assists in determining the inertia and rotational kinetic energy.

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