Physics question.

[ponder]

If the vehicle is not tied to the dyno, there will be a force exerted...

If you don't strap the car down you're an idiot, there will be health & safety issues and your boss will fire you. That is the outcome of not strapping a car on a dyno down.

 

[creeper]

If you don't strap the car down you're an idiot, there will be health & safety issues and your boss will fire you. That is the outcome of not strapping a car on a dyno down.

And strapping a rocket to car isn't stupid

 

[Swa]

Yes the car would move...but off the dyno and into the wall in front of it.

That's what I said but only if the force of the rockets are greater than the force of gravity keeping it between the rollers.

The wheels won't move because of the rocket directly, but purely by virtue of moving out of place and going forward.

The same situation as with a rocket propelled car on the ground.

Read your post again:


That means the plane only applies enough thrust to stay in one place, thus no airflow over the wings (apart from propwash) and thus no lift to take off. Where is the fail? The wheels have nothing to do with it. If the plane's engine is strong enough to propel it forward faster than the treadmill is moving back, then it will accelerate and will be able to take off.

Exactly

If you don't strap the car down you're an idiot, there will be health & safety issues and your boss will fire you. That is the outcome of not strapping a car on a dyno down.

Point of thread over head.

 

[bekdik]

No, but if the car's a diesel you get a discount on those..

Even if it's a VW?

 

[Magnum]

I think so too, because the ground and the dyno are static.

It would move on the ground so why wouldn't it move on the dyno? Its just like a infinite road.

Hi OP. You need to go sit in a corner and contemplate your life. How do wheels turn. How does a car move and how does a dyno work...

 

[Hamish McPanji]

Hi OP. You need to go sit in a corner and contemplate your life. How do wheels turn. How does a car move and how does a dyno work...

Leave Rickster alone. He asked a fair question which is a little difficult to get your head around. The fact that it generated so much debate is testament to that. Only idiots think they know everything, and there are lot of them on this thread

Keep it up Ricky.

 

[Rickster]

Hi OP. You need to go sit in a corner and contemplate your life. How do wheels turn. How does a car move and how does a dyno work...

Lol, a bit harsh.


But I do understand now, since the car isn't in motion the wheels cannot turn.

 

[Ho3n3r]

Think about it this way: If a jet is resting on 2 massive dyno rollers, and its engine starts up and go full blast, will it move?

Of course it will. Rockets push against air. That's where the thrust comes from.

 

[Sinbad]

Think about it this way: If a jet is resting on 2 massive dyno rollers, and its engine starts up and go full blast, will it move?

Of course it will. Rockets push against air. That's where the thrust comes from.

Wrong wrong wrong.
Rockets do not push against air.
If they did, how would they work in space?

 

[kripstoe]

Think about it this way: If a jet is resting on 2 massive dyno rollers, and its engine starts up and go full blast, will it move?

Of course it will. Rockets push against air. That's where the thrust comes from.

Newton would disagree with his 3rd law

 

[ponder]

Think about it this way: If a jet is resting on 2 massive dyno rollers, and its engine starts up and go full blast, will it move?

Of course it will. Rockets push against air. That's where the thrust comes from.

 

[ponder]

Point of thread over head.

No I get the point of the thread but some people are offering explanations outside the parameters of how a dyno is setup/works. The next guy might as well remove the dyno from his explanation if we are gonna go down that road.

 

[Magnum]

Leave Rickster alone. He asked a fair question which is a little difficult to get your head around. The fact that it generated so much debate is testament to that. Only idiots think they know everything, and there are lot of them on this thread

Keep it up Ricky.

it is quite simple. take your car. and push it ? What happens....
now take car push it whilst handbrake is up? what happens?

You are the rocket. Google what rockets do and you will see what happens to wheels when car is stationary with external force applied to it.

 

[Magnum]

http://www.extremetech.com/extreme/...el-quantum-space-engine-and-it-actually-works

reaction this. Newton needs to be updated a bit.