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A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass...

A lawn mower has a flat, rod-shaped steel blade that rotates about its center. The mass of the blade is 0.65 kg and its length is 0.55 m

What is the rotational energy of the blade at its operating angular speed of 3490 rpm ?

If all of the rotational kinetic energy of the blade could be converted to gravitational potential energy, to what height would the blade rise?

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