Physics
Rattleback
The averaged Garcia–Hubbard model shows energy exchange between spin, pitch and roll. Change skew and spin direction to observe asymmetric reversal times.

Try this
Compare both spin directions. Tapping supplies rocking energy. Averaged small-oscillation model; axes show the actual skew. Zero skew removes coupling.
Equations used in the module
Equations I n′ = −Kp Ep + Kr Er − γ I n Ep′ = (Kp n − γ) Ep; Er′ = (−Kr n − γ) Er E = I n²/2 + Ep + Er Garcia–Hubbard averaged model; Kp/Kr = ωp²/ωr²


