— Two crowns — Same mass, different density — Vertical slider — Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation ✓ Water displacement ✓ Rising water level — Splash effects — Physics correct — Live mass value ✓ Live volume value ✓ Live density value ✓ Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Implements a generic single-object buoyancy demo with a density slider and start button, but completely misses the core prompt requirements: no two crowns, no vertical crown-control slider, no Heureka animation, no splash effects, and the density control slider is horizontal and only adjusts object density rather than controlling crown submersion depth.
Implements a generic single-object buoyancy demo with a density slider and start button, but completely misses the core prompt requirements: no two crowns, no vertical crown-control slider, no Heureka animation, no splash effects, and the density control slider is horizontal and only adjusts object density rather than controlling crown submersion depth.