— 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 general Archimedes buoyancy simulator with correct physics (Fg, FA, submerged fraction) but completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), same mass/different density, a vertical slider controlling crown submersion, splash effects, rising water level, and a Heureka animation — instead delivering a generic single-body ASCII demo with horizontal parameter sliders.
Implements a general Archimedes buoyancy simulator with correct physics (Fg, FA, submerged fraction) but completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), same mass/different density, a vertical slider controlling crown submersion, splash effects, rising water level, and a Heureka animation — instead delivering a generic single-body ASCII demo with horizontal parameter sliders.