⛏️ Koepe Mine Hoist (2D): Winding Profile, Rope Tensions and the Slip Limit

2D shaft view of a friction (Koepe) mine hoist with cage and counterweight: a trapezoidal speed profile, rope tensions m(g+a), motor power and the Euler-Eytelwein slip condition, including an emergency-brake case. Checks cover trip time, energy balance and the slip threshold.