Quote:
Originally Posted by cody
We only know that we're told in the problem that the conveyor belt matches the speed of the wheels. What do we know about a vehicle who's wheels are matched by a conveyor belt in the opposite direction? It stays stationary.
|
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.