Physics question.

Rickster

Rickster

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If you attach a rocket booster onto a car and put that car onto a dyno, then fire just the rocket.

Would the wheels turn?
 
Where is the booster exhaust pointing?
 
Rickster said:
Explain, because should this happen on the ground, the car will move, so why wouldn't it on a dyno?
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A rocket is not connected to any drive train which would turn your wheels. It uses pressure to propel the object forward.
 
LaraC said:
A rocket is not connected to any drive train which would turn your wheels. It uses pressure to propel the object forward.
Click to expand...

On land speed record car, the rockets arnt connected to a drive train.
 
Rickster said:
Its mounted on the roof pointing forwards.

So the exhaust is near the rear of the car.
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Then the wheels will not turn. They'd only turn if the rocket exhaust actually struck the rollers or wheels at a tangent.
 
Yes they would but it's a bit more complicated than simply that.
 
Swa said:
Yes they would but it's a bit more complicated than simply that.
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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.
 
Rickster said:
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.
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The car is secured on a dyno when being tested. The rocket will not make the car move.
The rocket would make a car move on the road. Motion of the car will cause the wheels to turn.
Unless you're thinking of an unsecured car on something like a treadmill?
 
Sinbad said:
The car is secured on a dyno when being tested. The rocket will not make the car move.
The rocket would make a car move on the road. Motion of the car will cause the wheels to turn.
Unless you're thinking of an unsecured car on something like a treadmill?
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Even that wont work unless the rocket is attached to the dyno or treadmill.
 
LaraC said:
Even that wont work unless the rocket is attached to the dyno or treadmill.
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The car would move forward in that case.
Whether the wheels turn or the treadmill moves or both would depend on a bunch of variables like friction in the hubs/brakes, friction of the treadmill, inertia of the various parts etc
 
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