The bar A B is pinned to a fixed support at A at one end and to the center of the bike whe...

The bar A B is pinned to a fixed support at A at one end and to the center of the bike wheel B at its other end. The bike wheel is spinning with angular speed ω0 = 50 rad/ s when it is gently placed on the horizontal surface. The mass of the bike wheel is mω = 2.5 kg, its radius is R = 33 cm, and its mass moment of inertia is IB = 0.2486 kg · m2.

If the mass of bar A B is negligible and the coefficient of kinetic friction between the wheel and the surface is μk = 0.6, determine the time it takes for the wheel to come to a complete stop, and find the reactions at A and B on bar AB.

Figure P7.38