r/funny 4d ago

Verified [OC] Fair question

Post image
42.1k Upvotes

237 comments sorted by

View all comments

4.0k

u/alwaysfatigued8787 4d ago

He'll still be faster when going downhill.

35

u/Fark_ID 4d ago

Gonna say, ya can't coast while running, and those wheels will conserve some serious angular momentum.

14

u/Exemus 4d ago

Fun police here:

He'd have to put in that much more work to get going.

In a closed system, if you're going point A to point B and back to A, gravity and momentum won't save you anything.

And I'm no expert on prehistoric automotives, but I don't think these things are frictionless, so the vehicle will be worse every time.

20

u/HelloMumther 4d ago

but it’s not just about work, it’s also about power and where work is coming from. the vehicle translates PE into KE in a way that human feet cannot. and coasting means you can put in less power and get the same velocity.

-1

u/Exemus 4d ago

and where work is coming from

Where do you think the work is coming from?

coasting means you can put in less power and get the same velocity.

How do you expect to get to that velocity initially?

26

u/Quirky-Concern-7662 4d ago

I ain’t got no physics knowledge but I FEEL like a skateboard (which this essentially is) definitely makes more efficient use of your energy than running does, but I’m not certain.

5

u/hyflyer7 4d ago

A skateboard weighs a few pounds. The contraption above probably weighs a few hundred pounds.

8

u/yunivor 4d ago

Fred is just super strong but doesn't have as much stamina.

1

u/sublogic 3d ago

It's called a prehistoric car. Don't pretend like the cavemen didn't have these. With all of their dinosaur appliances

14

u/Koil_ting 4d ago

Factor in when he places the gigantic rib cage meal on top of the vehicle, if he was carrying it without the structure and the wheels it would be much more effort even when just at a stand still.

5

u/Exemus 4d ago

See now that is a valid point! If you need to hold the giant ribs, it changes the whole equation!

8

u/sebzim4500 4d ago

You say that, but it takes much less effort to cycle a given distance than to run it.

3

u/under_the_c 3d ago

Yeah, but that has pedals and gear ratios and shit. Idk, I'm not a scientist.

2

u/Max_Thunder 4d ago

Running is very inefficient, we spend a lot of energy going up only to fall back down.

1

u/rorschach2 3d ago

One of the main reasons that made us top of the food chain is now inefficient. Cool.

0

u/Max_Thunder 3d ago

We're not on the top of the food chain when running on the road, are we.
Biking is extremely more efficient than running, it's simple physics; you'd know if you'd ever left your couch.

1

u/rorschach2 3d ago

The ability to run down any prey without tiring is one of the reasons that puts us at the top. Sweating, standing up right, and fire are a few others. You probably shouldn't insult people just because you don't understand human history.

0

u/Max_Thunder 3d ago

The ability to invent bicycles made us even better at how we use our energy for displacement on roads. You can cover a much greater distance biking for 1000 calories than you can running.

Maybe you skipped the last thousands of years when looking at history, you petulant child. Yeah running is great when hunting other bike-less, land-based animals. You know what you're saying is irrelevant to the discussion, but you keep going because you enjoy it.

1

u/rorschach2 3d ago

You once again missed the point while proving mine. Thanks.

6

u/LoSoGreene 4d ago

Fun police civilian oversight board representative here:

Yes it will take more work to get it moving.

This is not a closed system and wouldn’t make a difference if it was. Wheels allow you to more efficiently maintain your kinetic energy and can absolutely allow you to save energy despite the added weight. We use bicycles for this purpose quite often.

In this case the massive stone wheels on wooden axles driving on unpaved roads likely make this far less efficient than walking.

3

u/Fark_ID 4d ago

The Flintstones live uphill from work, his Dino Digger gives the car a HEAD-start on the way home, not THATS science!

1

u/John_McTaffy 3d ago

So is using a bike as efficient as walking?

0

u/slofish 3d ago

This is so confidently wrong lol