1. A 75-g phonograph album of 30-cm diameter spins at 33.3 rpm. What is its kinetic energy?
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What are your thoughts on how to go about solving it.
well i think that Kinetic Energy is 1/2mv2so is it like that but instead of v you put in the 33.3 rpm. like 1/2(75)(33.3)2 maybe?
What is the moment of inertia of the phonograph?
Using the moment of inertia what is the formula then for rotational kinetic energy?
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