Plane

[Deleted member 36735]

I give in I don't have the time or inclination for this anymore.
And to think you called me a wind up merchant

You had a credible get out clause then

 

[RichA]

The earth stops it? It just evaporates ?

I don't believe that's the normal result of an object being driven into the Earth. I doubt it will have built up sufficient speed. Probably irreparable damage to the plane and the conveyer belt though.

 

[Deleted member 35927]

You had a credible get out clause then

You are so far off the mark with your answers that you're not even wrong.

 

[Deleted member 36735]

You are so far off the mark with your answers that you're not even wrong.

Ahh welcome back.

It's very easy to say that without providing anything credible of your own.

 

[Fade and Die]

Jeez this thread! It’s a thing of hideous internet beauty!

In a nutshell the only way the plane takes off is if the speed the wheels rotate exceeds the speed the treadmill rotates. Simples

 

[Deleted member 35927]

Jeez this thread! It’s a thing of hideous internet beauty!

In a nutshell the only way the plane takes off is if the speed the wheels rotate exceeds the speed the treadmill rotates. Simples

No but a nice try

 

[RichA]

No but

No but

No but

No but

No but

No but

No but

No but

Sorry.

 

[Deleted member 35927]

Sorry.

Surely you missed the

Yeah but .

 

[Fade and Die]

No but a nice try

Two examples were given that made it easy to visualise the “conundrum”. The airport travelator and the bike on the treadmill, both showed how an external force could propel the object forward. In both cases the wheel speed outmuscled the treadmill. It has to be the same in the OP.

 

[Deleted member 36735]

Two examples were given that made it easy to visualise the “conundrum”. The airport travelator and the bike on the treadmill, both showed how an external force could propel the object forward. In both cases the wheel speed outmuscled the treadmill. It has to be the same in the OP.

I think your wording has contradicted what you think there.
The speeds of the wheels don't outmuscle the treadmill, the treadmill always moves at the speed of the wheels.

 

[Deleted member 35927]

Two examples were given that made it easy to visualise the “conundrum”. The airport travelator and the bike on the treadmill, both showed how an external force could propel the object forward. In both cases the wheel speed outmuscled the treadmill. It has to be the same in the OP.

I realised after I hadn't posted what it meant, but left it as not to appear like a flip flopper

 

[Voyager EMH]

It doesn't counteract the jet pack but the wheels, if speed matched to the conveyor, won't go anywhere. The dude face plants the ground with whatever force is applied to his back by the jet pack.

A lovely visual image, but I don't believe so.

The wheels of the rollerskates are free spinning and so they will match the speed of the conveyor.
The jet pack gives more power than is needed for the rollerskater to stand still on the conveyor and so he will move forwards.

 

[Deleted member 36735]

A lovely visual image, but I don't believe so.

The wheels of the rollerskates are free spinning and so they will match the speed of the conveyor.
The jet pack gives more power than is needed for the rollerskater to stand still on the conveyor and so he will move forwards.

No he won't because the rule of the scenario is that the conveyor always matches the speed of the wheels and "counteracts".

 

[Deleted member 35927]

No he won't because the rule of the scenario is that the conveyor always matches the speed of the wheels and "counteracts".

But the plane has to move so the wheels can rotate, I love that you just skip past that .

You hang on to counteracting the wheels but it's not the wheels that matter you could spin the conveyor twice as fast as the wheels and the plane will take off

 

[SteveW86]

Damn, missed getting post 500.

I’ll be back in 500 posts

 

[Deleted member 35927]

Damn, missed getting post 500.

I’ll be back in 500 posts

Sorry sir

 

[RichA]

A lovely visual image, but I don't believe so.

The wheels of the rollerskates are free spinning and so they will match the speed of the conveyor.
The jet pack gives more power than is needed for the rollerskater to stand still on the conveyor and so he will move forwards.

Any forward motion would require the roller skate wheels to be faster than the conveyor, which is verboten.
Stationary wheels become the pivot, force of the jet pack becomes torque around the pivot. Face plant.

 

[Deleted member 35927]

Hang on a minute ...... What direction is the conveyor going .....

 

[Deleted member 36735]

But the plane has to move so the wheels can rotate, I love that you just skip past that .

How do you not understand that as the wheels rotate and the conveyor moves backwards (relative to the plane) to counteract, the plane is at a standstill relative to normal fixed points?

If the engine was turned off with the wheel brakes on, if the conveyor started at 50mph the plane would move backwards at 50mph.
If the engines were then turned on, brakes off, and the plane accelerated to 50mph ground speed it would be at a standstill compared to fixed points. Can you clarify that you actually understand that ?

 

[Deleted member 36735]

Hang on a minute ...... What direction is the conveyor going .....

Oh my goodness