View Single Post
Old 2008-01-31, 12:18 PM   #142
cody
Candy Mountain
 
cody's Avatar
 
Real Name: Cody
Join Date: May 2005
Location: Californication
Posts: 7,751
 
Car: 03 Pussy Wagon, now with more pink!
Class: TESP
 
OMG Internet!
Default

Quote:
Originally Posted by knucklesplitter View Post
See my post about the wheels moving meaning the centroid of the wheels moving. If your vehicle is going 50mph your wheels are going 50mph, *even is the wheels are locked up*. If the line lock is engaged on a stationary drag car and it is spinning the wheels during a burnout at 1000rpm, the wheels are moving at 0 mph depite spinning furiously. If you back your 74 Cutlass up at 30mph in reverse and slam it into drive and light the tires up to do a "rolling J" the wheels are still moving backwards at about 30mph despite spinning in the forward direction. This really isn't semantics it is scientific convention.

I miss my 74 Cutlass.
So you're saying that the wheels/tires can slip? I agree with you then. I mean, if the plane can take off without unlocking the brakes (RE: wheels don't spin), then sure, it can take off. Maybe lube up the magical conveyor first?

While we're at it, let's go ahead and put the first conveyor belt on another conveyor belt that moves the plane and first conveyor belt at the right speed for the plane to take off.

Quote:
Originally Posted by knucklesplitter
So the conveyor is moving at the speed of the plane in the opposite direction, so the wheels would be spinning twice as fast with this magical conveyor as they would normally.
So let's say the centroid of the wheels are traveling across the surface of the conveyor at 100 mph (relative to the conveyor of course). If the conveyor is also going at 100 mph (as per the constraints of the problem), how fast is the plane traveling (again, relative to this stationary conveyor) assuming a no slip condition?
__________________
Slow and low, that is the tempo.

Last edited by cody; 2008-01-31 at 12:20 PM.
cody is offline