Model: each dancer follows an idealised floor pattern at constant stride per beat, so ground speed v = stride x beats per second. Ring dance: centripetal acceleration a = v²/R and hand tension T = m v²/(2R sin(π/N)) (m = 70 kg). Hop: y = A sin²(πb) gives floor force F/mg = 1 + y′′/g. Maypole: free ribbon length l = L − wound length, dancer radius d = √(l² − dz²). Figures are simplified, not choreography records.