Задача id13358

A decorative cap comes off the wheel of a moving car, which, after jumping along the road, begins to roll immediately without slipping. At what car speed v0 is this possible? The radius of the wheel is R = 40 cm, the cap can be considered as a homogeneous disk of radius r = 20 cm, the coefficient of friction between the cap and the road is k = 0.2.

Short solution. Format gif