The discussion centers on the conservation of angular momentum as it applies to a rotating bicycle wheel in a frictionless environment. It establishes that while a bicycle wheel may appear to stop due to friction with the axle, the principle of conservation of angular momentum remains intact. When the wheel slows down, the axle compensates by gaining angular velocity, resulting in both components rotating together at a constant rate. This interaction ensures that angular momentum is conserved in the system.
PREREQUISITESPhysics students, educators, and anyone interested in understanding the principles of angular momentum and rotational dynamics in theoretical and practical contexts.
You are wrong to say that the body stops. As per @Halc's answer, the wheel slows and the axle spins up until both are rotating at the same rate. Then the wheel and axle continue to spin eternally, at rest with respect to each other.abdossamad2003 said:Suppose we have a rotating body like a bicycle wheel in space away from gravity. This body stops after a while due to friction between the wheel and wheel axles. Is not the conservation of angular momentum violated?