Inertia - Mass - Friction - Amazing Physics!

I discovered that a large ball bearing will spin for a unexpectingly LONG time when placed in a glass bowl. I was able to get one spinning for over 2 minutes. It was so long that I felt I needed to add a few extra clips of other tests to keep people from falling asleep! The watch is there to show that I didn't cheat.
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The large bearings measure around 37mm and were removed from a very large extruder during an overhaul. The smallest balls are Pachinko balls.




Music:
Tunguska Chillout Society
http://www.jamendo.com/en/album/35205
"Dream Catchers"

Category:

Science & Technology

Tags:

• physics
• kinetic
• levitation
• Fushigi
• Ball
• perpetual
• motion
• energy
• euler's
• disk
• inertia
• amazing
• science
• taofledermaus

[stevecrye]

Watching this reminded me of something - transfer of momentum between a basketball and a tennis ball. Hold a basketball at arms length and position a tennis ball on the top - don't hold the tennis ball, let it sit exactly on the top of the basketball. Drop the basketball, being careful to not disturb the relative positions. When the BB hits the floor there will be a small gap. The tennis ball will rebound with AMAZING speed (be careful). Video it!

[taofledermaus]

@stevecrye I've never heard of that before! That I've got to try.  Hopefully I won't get a tennis ball in my face. lol

[mrbadx19]

man, i had a load of "mill balls" 32 years ago from a coal power plant's SO2 processor, some were 100+mm in diameter, imagine a few thousand of those being tossed around in a 20 foot diameter steel drum!

[taofledermaus]

@mrbadx19 They used those to pulverize the coal?  Gotta be better than a hammer mill.

[psaratscheff]

@mondonem

Sorry, but not.

It just keeps the initial energy and needs energy to be stopped (That's what friction normlly does)

[MrFennmeista]

what is the Song name!!

[drizel462]

@xactlyme a body spinning in vacuum is not using energy to spin, just the initial energy to put it in motion. Unless acted upon it will continue to spin forever.

[RelentlessSoviet]

Imagine if this were an Ideal Machine :)

[venacavaz]

the song is freaking me out....

[mondonem]

if it keeps circling forever = infinite enrgy

am I right?

[monkey314159]

@stevecrye I did that except with a golf ball. Don't do it near cars...