The classical mechanic laws were written for one dimension interactions.
I found some cases where these laws should be corrected.
This means the classical mechanics laws should be reviewed for multidimensional
interactions.
One of these simple visual examples is - the cylinder which takes a momentum
asymmetrically (away from his center mass).
The classical physics disallow convert translation momentum to angular momentum.
Because the classical physic allow to convert one type of movement to ONLY one
other. But it can't be start two movements together.
However Mother Nature gives us many examples where one type of movement
interacts to two types of movements together. The problem with cylinder - one of
them. This is not covering by classical mechanics laws. It just substitutes
solutions for any of these types of movements. We should choose this type of
movements first. This is the problem of classical mechanic laws. The momentum
conserve, however the generic law of momentum conservation for multidimensional
movement is covering linear and angular momentums
http://knol.google.com/k/alex-belov/paradox-of-classical-mechanics-2/1xmqm1l0s4y\
s/9#