— 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 Archimedes buoyancy demo with a horizontal depth-slider and material selector, but completely misses the prompt's core requirements: no crowns, no crown-specific mass/density values, no vertical slider, no fall animation, no rising water level, no splash effects, no Heureka animation, and no live mass/volume/displaced-water readouts.
Implements a generic Archimedes buoyancy demo with a horizontal depth-slider and material selector, but completely misses the prompt's core requirements: no crowns, no crown-specific mass/density values, no vertical slider, no fall animation, no rising water level, no splash effects, no Heureka animation, and no live mass/volume/displaced-water readouts.