This Weird Shape Rolls Uphill Instead of Down

Summary by Krater

The video demonstrates counter-intuitive physics demonstrations involving objects that appear to roll uphill, explaining center of mass and buoyancy principles.

From the video

Answers: Why do some objects appear to roll uphill?

• center of mass
• gravity
• physics demonstrations
• buoyancy

What it concludes

• Objects roll uphill because their center of mass actually moves downward during the rolling motion.
• A helium balloon sinks in a vacuum chamber because the surrounding air density becomes less than the helium inside.