Same water. Same height. Same outlet. Nib and Spider-Man choose different tank shapes. Which one actually empties first? Watch the remaining water, not just the falling level. The marked replay repeats the same model.
Original stylized physics animation with Nib and a Spider-Man-inspired block character. Not affiliated with Marvel. No movie footage or third-party soundtrack. Animated diagrams, not filmed experiments.
Tank model: two axisymmetric frusta, same initial volume and height, identical small outlets and discharge coefficient, open to atmospheric pressure. Radius profiles r(h)=1-0.55h and r(h)=0.45+0.55h, normalized height 0 to 1. Quasi-steady Torricelli flow; evaporation, viscosity differences and terminal capillary effects omitted. Water levels and remaining-volume bars use the same integrated model; playback time is scaled. The narrow-bottom tank empties first.
Bottle vortex: qualitative schematic based on the air-exchange mechanism. Drain trajectories and timing are illustrative, not CFD, measured speeds or a quantitative prediction. One side receives a visible initial swirl.
References:
#Physics #MarbleCosmos #WaterExperiment #shorts
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