(Solved): Determine the coefficient \( \mu_{k} \) of kinetic friction which allows the homogeneous body to m ...

Determine the coefficient \( \mu_{k} \) of kinetic friction which allows the homogeneous body to move down the \( 30^{\circ} \) incline at constant speed. Show that this constant-speed motion is unlikely to occur if the ideal roller and small foot were reversed. For the situation shown: \[ \mu_{\mathrm{k}}= \] If the roller and the small foot were reversed, we would find that: \[ \mu_{k}= \] which is too high for simple contact.