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April, 2025

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Skiing Biomechanics

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Shower_Boy
Posts: 155 - Karma: 1,373
So I'm taking a biomechanics class this semester and I'm trying to find as many ski related examples as possible to talk to my professor about. A couple ideas I already I have are the physics behind nosebutters, I showed my teacher Mango's iconic nosepress backflip and harlaut's trip cork nosebutter to win gold. I also thought of looking into the physics behind what makes grabs so difficult like A Hall's seatbelt grab versus a basic safety grab. Another one I got was how bad is it on your knees to land screaming semen and to do caribous. If you guys have any other ideas with times you were like bruh how the fuck did he possibly pull that off throw me the idea with a video and maybe we can figure out the biomechanics behind all the crazy stuff that happens in the ski world
5 years ago
17 1
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SofaKingSick
Posts: 9729 - Karma: 65,694
pretzeling? the mechanics of how you stop your momentum and go the other way could be interesting

snow loop and jesper's rail/box loop came to mind, but maybe that's less biomechanics and more "just" physics depending on the focus of your class
5 years ago
17 0
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Andi_G
Posts: 3101 - Karma: 15,259
Henrik's NB 180, AHall cork 180, and Syrja's/Antti's rodeo 180 things would be awesome to look at because they're using the movement of their bodies to counteract and stop rotations. You can get the rotational force and momentum from the initial spin and then figure out how much energy the skier needs to generate to stop it at 180!

Another cool one to look at might be Daniel Hanka's shifties for looking at how to speed up and slow down how spins look using your body
5 years ago
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SavageBiff
Posts: 3483 - Karma: 14,759
The effects of pizzaing should b studied
5 years ago
11 0
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Mooseknucke
Posts: 15 - Karma: 134
I took biomech last semester, one example our prof used was the force of friction of the ski on snow and FG acting on the skier that is involved in down skiing in general. Force of gravity is straight down however is changed with the slope. Therefore, the scale is changed with degree of the slope. It splits force of gravity into two compents FGY and FGX.
5 years ago
8 0
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OregonDead
Posts: 7072 - Karma: 26,614
switch pizza
5 years ago
9 0
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dolanslebensraum
Posts: 5959 - Karma: -13,095
Op just do it on precession (corkscrewing). You can tell your teacher/class about how the earth is technically corkscrewing just like a skier does wobbling around its main rotation axis.

**This post was edited on Feb 3rd 2020 at 1:48:54pm
5 years ago
3 1
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TheClap.
Posts: 21685 - Karma: 4,249
Peps 270 revert at the JOI
5 years ago
7 0
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ReturnToMonkey
Posts: 6448 - Karma: 70,201
moose14I took biomech last semester, one example our prof used was the force of friction of the ski on snow and FG acting on the skier that is involved in down skiing in general. Force of gravity is straight down however is changed with the slope. Therefore, the scale is changed with degree of the slope. It splits force of gravity into two compents FGY and FGX.


Gravity is actually fake because of the flat Earth but good try buddy!
5 years ago
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Mr.Lumpyjumbles
Posts: 157 - Karma: 1,444
The mechanics of T Hall breaking his ankles on Chad's.
5 years ago
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xxACIDTRIPxx
Posts: 5980 - Karma: 8,185
Study how full tilts affect biomechanics
5 years ago
2 1
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dolanslebensraum
Posts: 5959 - Karma: -13,095
TheClap.Peps 270 revert at the JOI


That trick was insane i remember.
5 years ago
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oldworld_newlife
Posts: 1013 - Karma: 5,251
Answer using science once and for all if you can hit jumps on vishnus
5 years ago
8 0
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corona
Posts: 12845 - Karma: 33,290
Mr.LumpyjumblesThe mechanics of T Hall breaking his ankles on Chad's.


Actually solid idea. It wouldn't be too difficult to calculate the actual pressure exerted on his ankles based on the jump characteristics and Tanner's characteristics. Then this can be validated against known values for pressure required for compression fractures in those bones. It was probably a pretty insane number like a ton of pressure per ankle.
5 years ago
4 0
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dolanslebensraum
Posts: 5959 - Karma: -13,095
VinnieFActually solid idea. It wouldn't be too difficult to calculate the actual pressure exerted on his ankles based on the jump characteristics and Tanner's characteristics. Then this can be validated against known values for pressure required for compression fractures in those bones. It was probably a pretty insane number like a ton of pressure per ankle.


Do you mean pressure per ankles are broken?
5 years ago
2 0
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goldlion
Posts: 51 - Karma: 71
Mr.LumpyjumblesThe mechanics of T Hall breaking his ankles on Chad's.


wow you beat me to it, pretty sick
5 years ago
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Youngm_IPCME
Posts: 1082 - Karma: 2,853
moose14I took biomech last semester, one example our prof used was the force of friction of the ski on snow and FG acting on the skier that is involved in down skiing in general. Force of gravity is straight down however is changed with the slope. Therefore, the scale is changed with degree of the slope. It splits force of gravity into two compents FGY and FGX.


Isn’t that just a block on a plane?
5 years ago
1 1
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LukeTheWaffle
Posts: 1847 - Karma: 8,889
Yeah how the fuck a cork 180 works
5 years ago
4 0
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Mooseknucke
Posts: 15 - Karma: 134
Young_IMPCIsn’t that just a block on a plane?


yep, exactly. But skiing was the example used.
5 years ago
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clorox
Posts: 1728 - Karma: 4,867
I'd like to know in detail why it hurts to flex my shins foreword after a lengthy tail press/wheelie.
5 years ago
1 0
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galardogod
Posts: 1716 - Karma: 5,336
what program are you going to use? Logger pro has video analysis and is good shit.
5 years ago
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