— 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
Completely misses the brief: no crowns, no vertical crown-control slider, no water animation, no fall/splash/heureka — only a generic buoyancy-force calculator with ASCII art and horizontal sliders for fluid density/volume/gravity.
Completely misses the brief: no crowns, no vertical crown-control slider, no water animation, no fall/splash/heureka — only a generic buoyancy-force calculator with ASCII art and horizontal sliders for fluid density/volume/gravity.