imagine an astronant 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 them wheel if you looked through a telescope at the bicycle wheel ten years from now would it still be spining?explain your answer
According to Newton’s first law of motion, (the law of inertia), an object in motion will remain so unless acted upon by an external force. Assuming no air resistance because it is in space, and no other external force is acting upon it, the trajectory of the bicycle will remain the same and also the spinning wheels should theoretically spin for ever.
However, there is a question mark on the mechanical life of the spinning wheels, bearings etc. Since nothing is stated on that, one would consider mechanical wear and tear of the spinning accessories due to friction and gravitation (whatever tiny amount it might assume). Whether the bicycle wheels would continue spinning after 10 years or not depends upon the mechanical aspect stated above.