Conservative · coupled ODE

Planar Double Pendulum

Two equal point masses on massless rigid rods. The lower bob paints a bounded, age-fading spectrum.

Running
θ₁120.0°
θ₂−10.0°
time0.00 s
ω₁0.00
ω₂0.00
trail0 pts
Reset holds the initial pose · Resume replays ΔE 0.0000 J
m₁ = m₂ = 1 · ℓ₁ = ℓ₂ = 1 · g = 9.81 · RK4 Δt = 1/1000 s · angles measured from downward vertical · Space/R shortcuts