Anonymous at Mon, 1 Jul 2024 19:45:50 UTC No. 16263166

Air resistance is significant when running

Anonymous at Mon, 1 Jul 2024 20:09:53 UTC No. 16263217

>>16263103
It's not literally the same thing. I used to run track in high school and one winter I trained exclusively on the treadmill to stay in shape. When the weather warmed up and I started running outside, my pace was much slower and my hamstrings were burning and made me sore for weeks. Turns out that treadmill running doesn't work your hamstrings at all, but running on the actual ground your hamstrings need to contract to actually pull your body forward.

Anonymous at Mon, 1 Jul 2024 20:11:09 UTC No. 16263220

>>16263103
Why are you so adamant about this when you can literally just go outside and run and see that it is, in fact, more difficult than running the same speed/distance on a treadmill?

Anonymous at Mon, 1 Jul 2024 20:22:39 UTC No. 16263231

I mean, you're not wrong about reference frames- but think about it: Do you typically run at a perfectly constant horizontal speed?

Anonymous at Mon, 1 Jul 2024 20:25:09 UTC No. 16263235

>>16263217
The only reason I like treadmills is for pacing.

Anonymous at Mon, 1 Jul 2024 20:26:21 UTC No. 16263240

>>16263217
What if you angled it uphill?

Anonymous at Mon, 1 Jul 2024 20:41:20 UTC No. 16263256

>>16263166
Only if you are significantly large

Anonymous at Mon, 1 Jul 2024 23:06:07 UTC No. 16263469

>>16263103
by your logic the plane should take off

Anonymous at Tue, 2 Jul 2024 02:04:18 UTC No. 16263640

>>16263469
What makes you think the plane stays on the treadmill?

Anonymous at Tue, 2 Jul 2024 11:34:06 UTC No. 16264207

>>16263217
Another guy who thinks he's breaking Newton's laws of motion because "it feels different bro".

Anonymous at Tue, 2 Jul 2024 11:35:35 UTC No. 16264210

>>16263469
Air resistance actually matters here though, because that's what's lifting the plane. It doesn't for small objects travelling at slow speeds.

Also even if the wheels on a plane spin freely the propeller would push the plane forward, regardless.

Anonymous at Tue, 2 Jul 2024 19:29:11 UTC No. 16264791

>>16264210
>Air resistance matters here
>That's what's lifting the plane
Wrong. Lift force is the pressure differential on the top and bottom of the wings, creating a net upwards force. Air resistance is a net backwards force, which only serves to slow the plane down. Some air resistance is a result of lift, but in theory the two are separate.

You're correct about the wheels not mattering, since they're not what's propelling the plane forward. The propulsion system, be it a propeller or jet engine, acts on the air directly and don't rely on friction with the ground like a car.

Anonymous at Tue, 2 Jul 2024 22:13:30 UTC No. 16265039

>>16264210
Air resistance, aka drag, is NOT what produces lift.

Anonymous at Tue, 2 Jul 2024 22:25:05 UTC No. 16265055

>>16263256
Not that cunt but no, in the limit it's most of what holds you back.

Anonymous at Wed, 3 Jul 2024 05:24:34 UTC No. 16265496

>>16263103
its common knowledge in fitness community that treadmill miles dont equate to running real life miles. 1 mle on treadmill .80 real mile

Anonymous at Wed, 3 Jul 2024 05:29:42 UTC No. 16265505

AMERICANS will LITERALLY buy any stupid Shit. You spend 1k on a fucking treadmill when you can litterally go out the door and walk and run outside..

I don’t feel bad when rich people Scam you dumb sheep

Anonymous at Wed, 3 Jul 2024 05:31:29 UTC No. 16265507

>>16265039
Drag and lift are just different components of the same reactive force to air hitting the wing.

Anonymous at Wed, 3 Jul 2024 08:13:29 UTC No. 16265645

>>16265496
>common knowledge in the fitness community
>broscience
The perceived difference might make a real difference in times but mechanically you're doing the same work.

Anonymous at Wed, 3 Jul 2024 08:19:46 UTC No. 16265651

>>16263103
Why don't they just make a fitness cycle that is angled at 45deg for easy as hell uphill cycle session. And by easy I mean it would feel easy. Obviously it would train you hardcore. You know with the "frame of reference" and everything.

Anonymous at Wed, 3 Jul 2024 10:06:31 UTC No. 16265746

>>16265645
>but mechanically you're doing the same work.
Source to back up your claim?

Anonymous at Wed, 3 Jul 2024 10:08:46 UTC No. 16265748

>>16263103
>Moving on a treadmill is LITERALLY the same as moving on ground, ignoring negligible wind resistance.
is the ground as smooth as the surface of the treadmill?does your treadmill have gravels?

Anonymous at Wed, 3 Jul 2024 10:47:23 UTC No. 16265786

>>16263103
A treadmill is boring as fuck, and when I did placement experience with an occupational therapist, it had terrible compliance numbers vs. walking outdoors or indoor/outdoor cycling -- though, tbf, that was without headphones, a TV screen, etc.

Anonymous at Wed, 3 Jul 2024 10:52:56 UTC No. 16265792

It's not the same. I ran on a treadmill for months to prepare myself for the Army. Then I ran on a track and it was totally different. Muscles were being used that the treadmill did not work out.

Anonymous at Wed, 3 Jul 2024 14:37:42 UTC No. 16265999

>>16265507
>Drag and lift are different components of the same force
It's more complicated than that, there are multiple sources of drag, and your schematic lumps a few of them together and oversimplifies it a bit.

An airfoil at an angle of attack has a net circulation associated with it, which results in a downward deflection of the air, and a reaction force that points upwards and backwards as drawn in your cartoon. The resulting force points normal to the chord of the airfoil. The vertical component of that is deemed lift, and the horizontal component is "induced drag". As you add camber, you can produce lift even with zero angle of attack, greatly reducing the induced drag.

Practically speaking, there are other phenomena which are much bigger contributers to drag, namely profile drag, and skin friction. The former being the result of blockage/deflection of air around a body without a net lift force being produced, and the latter being the result of viscous effects in the boundary layer, which is where turbulence also comes into play. Theoretically analyzing an airfoil using an idealized inviscid fluid correctly predicts the lift, but does not account for profile drag or skin friction, because the mechanisms are different.

Anonymous at Wed, 3 Jul 2024 14:43:20 UTC No. 16266009

>>16263103
1. You're fat
2. Treadmills are perfectly flat and straight (ground never is)
3. Your speed is fixed by the treadmill (not true on the ground)
4. The treadmill has more friction than asphalt or concrete on your shoes, yielding more efficient strides
t. /Fit/izen. PUT THE FORK DOWN YOU FAT SACK OF SHIT

Anonymous at Wed, 3 Jul 2024 14:44:38 UTC No. 16266011

>>16264207
>anon is supplied with personal experince that indicates there to be a significant difference between and activity and a mechanical simulation of that activity
>rejects the claim
>indicates no desire to objectively test whether there actually is a difference using his own body as a test bed
armchair physiologist confirmed

Anonymous at Wed, 3 Jul 2024 14:45:44 UTC No. 16266017

>>16263217
Based runner. Treadmill is a scam, your local gym centers don't want you in shape, they want your money.
>running is free
>physical activity is free
They don't want you to understand that.

Anonymous at Wed, 3 Jul 2024 14:50:39 UTC No. 16266027

>>16265999
No one cares about the details, retard. There is a net force and a net moment on the wing, which can be described without the specific distinction between lift and drag. The real problem is linguistics. Anon said air resistance and meant fluid interaction, so what.

Anonymous at Wed, 3 Jul 2024 15:28:46 UTC No. 16266076

>>16263469
>Mythbusterts tries to bust the 'plane on a treadmill' myth
>fails to recreate the conditions of the original myth then acts like the audience doesn't understand physics

Anonymous at Wed, 3 Jul 2024 15:41:18 UTC No. 16266094

>>16266009
This. The planet has upscaling, you actually have to get over an obstacle to move from one location of the planet to another.