Your instructor is demonstrating an interesting aspect of rotational motion usin

Question

Your instructor is demonstrating an interesting aspect of rotational motion using a spinning bicycle wheel and a (more or less) frictionless rotating chair. Your instructor is initially at rest on the chair holding the wheel so that it rotates in a horizontal plane (see the diagram). Your instructor now turns the wheel upside down and the instructor/chair/wheel system begins to rotate. a) If, looking from above, the wheel is originally rotating clockwise, does the instructor/chair/wheel system rotate clockwise or counterclockwise when the wheel is turned upside down?

The answer is clockwise, plz explain the reason

Explanation / Answer

instructor/chair/wheel system rotate clockwise , as seen from above due to the law of conserve the total angular momentum of the instructor/chair/wheel

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