A cylindrical can rotates at constant angular velocity about a vertical axis. There is no fricti...

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A cylindrical can rotates at constant angular velocity about a vertical axis. There is no friction and no external torque. At the bottom of can there a thick layer of ice, which rotates with the can. Suppose the ice melts, but none of the water escapes from the can. Is the angular velocity now greater than, the same as, or less than the original velocity? Explain.
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