quiz20 - a Find the angular momentum as a function of the...

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04/18/08 Physics 201 Quiz 20 A hula-hoop of radius R and mass M is attached at its rim to a horizontal rod, about which it can pivot. (if the hoop is in the yz plane, the rod is along the x- axis). The hoop is held horizontal, which we define to be theta =90. ( theta =0 at bottom) The hoop is released.
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Unformatted text preview: a) Find the angular momentum as a function of the angle. b) Find the angular velocity as a function of the angle. c) Now find the angular frequency another way: Find the torque by differentiating the angular momentum, and set it equal to the torque due to gravity....
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