A helicopter has two blades (see figure), each of which has a mass of 230 kg and can be approximated as a thin rod of length 6.7 m. The blades are rotating at an angular speed of 41 rad/s. (a) What is the total moment of inertia of the two blades about the axis of rotation? (a) Determine the rotational kinetic energy of the spinning blades.(adsbygoogle = window.adsbygoogle || []).push({});

i know i have to use Torque=I * angular acceleration

but i don't know how all that fits in?

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# Homework Help: Inertia and ke

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