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whopis01

(3,921 posts)

37. It the gyroscopic effect

Reply to Wednesdays (Reply #20)

Thu Oct 12, 2023, 06:19 AM

Oct 2023

But trying to explain why a gyroscope stays upright and resists motion is fairly complicated. And gyroscopes are fairly simple when it comes to rotating bodies because of their design, putting the majority of the mass into the rotating ring.

It gets even weirder when you have different mass distributions. Like this T shaped handle on the space station:

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Coin flips may not be 50/50 chance - study with 350,757 flips [View all] underpants Oct 2023 OP

As a coin collector, this interests me. LuckyCharms Oct 2023 #1

They used 48 different currencies underpants Oct 2023 #2

I dont think so. Ferrets are Cool Oct 2023 #4

That still makes me wonder if coins are generally minted with a consistently heavier LuckyCharms Oct 2023 #15

I THINK the heads are heavier. Ferrets are Cool Oct 2023 #25

Would be interesting to see a study of our present cupronickel clad vs older 90 pct silver coin. roamer65 Oct 2023 #5

I would like to see that as well. LuckyCharms Oct 2023 #13

The authors say they observed no head/tails bias. nt sl8 Oct 2023 #8

Overall, or within each individual coin type that they used? LuckyCharms Oct 2023 #14

Not sure, I only read the abstract. sl8 Oct 2023 #16

Thanks for this. n/t LuckyCharms Oct 2023 #18

In the theory of probability, there are three theories: no_hypocrisy Oct 2023 #3

Each coin flip is, in itself, 50/50 Cuthbert Allgood Oct 2023 #27

Nice to see something light Bettie Oct 2023 #6

❤️ underpants Oct 2023 #21

My guess is it's a slight tendency to flip coins to a consistent height Amishman Oct 2023 #7

I haven't looked at the study yet... Hugin Oct 2023 #10

In the case of the bicycle, Wednesdays Oct 2023 #20

It the gyroscopic effect whopis01 Oct 2023 #37

Were different flipping techniques found to be more random? Renew Deal Oct 2023 #9

Presumably. They report that it varied among the human flippers. nt sl8 Oct 2023 #19

It means coins are not perfectly weighted edhopper Oct 2023 #11

That's not what the study tested. Cuthbert Allgood Oct 2023 #28

thanks edhopper Oct 2023 #34

I think it has more to do with the distance travelled Old Crank Oct 2023 #12

That's the crux of the matter. Disaffected Oct 2023 #22

Probably not about speed; a physical model had already predicted this, due to precession muriel_volestrangler Oct 2023 #31

Very nice - thank you! Disaffected Oct 2023 #32

That's not the reason for the bias whopis01 Oct 2023 #36

Yeah, but what if you flip them in a vacuum, huh? Iggo Oct 2023 #17

Not enough sample size? Need more flips to get closer to 50/50? keithbvadu2 Oct 2023 #23

We have to appeal all those NFL games. milestogo Oct 2023 #24

And all the World cup games that went to penalties Old Crank Oct 2023 #26

No air calls in the NFL anymore underpants Oct 2023 #29

How would calling it in the air help? Disaffected Oct 2023 #33

"Tails never fails." Randy Moss Cuthbert Allgood Oct 2023 #30

Never let a magician flip your coins or shuffle your cards. hunter Oct 2023 #35