imagine an astronaunt takes a bicycle wheel with her into deep space .holding both sides of the axis ,she starts the wheel spining .then she lets it go and flies back to earth.assuming no one and nothing touched the wheel, if you looked through a telescope at the bicyle wheel ten years from now,would it still be spinning ?explain your answer.
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As long as there are no external forces (torque) acting on the wheel then the wheel will continue spinning. This is an application of the conservation of angular momentum.
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