# Plane on a conveyor belt (small scale) JUST TOOK OFF !!!!!! **URL:** \ **Category:** NYSpeed Off Topic\ **Created:** [January 30, 2008, 6:25pm UTC](https://forums.speedlife.net/t/plane-on-a-conveyor-belt-small-scale-just-took-off/42706 "2008-01-30T18:25:39Z")\ **Posts on this page:** 1\ **Showing post:** 130
**Author:** ![Clean\_Baldy](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clean_baldy/32/7308_2.png) [@Clean\_Baldy](https://forums.speedlife.net/u/Clean_Baldy)\ **Post date:** [January 31, 2008, 2:36pm UTC](https://forums.speedlife.net/t/plane-on-a-conveyor-belt-small-scale-just-took-off/42706/130 "2008-01-31T14:36:22Z")
> [@tpgsr](#): > > nope. > > Speed doesn’t matter. You could have the plane moving at 150mph forward, thus on solid surface the wheels would be moving at 150mph. forward. If you then crank up the treadmill to say 500mph, the wheels will just be moving at 500mph, and the plane will still be moving at 150mph forward. They are free rotating mass. Wheel speed and the speed of the conveyor have nothing to do with the true equation. I’m following your logic as well. That’s an entirely different perception on the speed. Sadly, speed does matter, as that it is part of the question. Equal speed of the treadmill to the plane. But, what part of the plane? You just summed it up. Two different parts working with different factors on perceptual speed. But, taking the plane as an object as a whole and not splitting it into wheels and body, the perception is different. EDIT: Wait, I read yours again. Your math doesnt add up. If a plane is moving 150 MPH forward in relation to actual forward movement, and the treadmill is going 500 MPH backwards… the wheels are going 750 MPH, and not equal. You add the two together. They may not have the same forces, and don’t have to be equal but they do constitute the final speed of the wheels on the ground. All three of your numbers are not equal, so you broke the question by not having equal speeds. --- _[View the full topic](https://forums.speedlife.net/t/plane-on-a-conveyor-belt-small-scale-just-took-off/42706)._