- #1
Nexus99
- 103
- 9
- Homework Statement
- A wheel of a bike, equiparable to a ring of mass m and radius r, is connected through an orizzontal axis OO' to a vertical axis. The axis OO' mantain the wheel in vertical position: its lenght is d and its mass is negligible. An engine at t=0, transmit to the vertical axis a moment that increase following the law ##M = 2t##, so the wheel, at the beginning, rolls without slipping. Calculate for t = 10 s, the angular momentum of the wheel respect to the point O' and the kinetic energy of the system. Calculate the moment when the wheel starts slipping. The static friction coefficient is ##\mu_s##
- Relevant Equations
- angular momentum, momentum, pure rolling condition
I had some idea to solve this problem but i can't understand where the moment M is directed and where the force/forces that has magnitude ##\frac{M}{d}## is/are directed. Can anyone help me?