Posted by: George () on Tue Jun 12 21:49:34 2007

> > > > Time for your medicine.
> > >
> > > I would have to agree with Teacherman and Jack.
> > > We are not discussing if rotation and linearity occurs simultaneously when DIRECTION is the subject. We all know that can happen. The barrel of a gun was designed with this in mind, a projectile can maintain it's trajectory longer while rotating. As a football would.
> > >
> > > We are discussing roation and linearity with generating energy (power) in mind. That is the issue in this forum. Please, pseudo scientists, do not randomly grab a descipline such as physics and find an example to suit your need. The very basic premise of an object in motion is that at the moment that object changes course (direction) from linear to rotation or vice versa, any kinetic energy that was built up to that point is lost according to the degree of directional change.
> > > If you stood on top of a moving train and thru a rock into the direction the train was moving, the rock would then travel the speed of the train PLUS the speed in which it left your hand.
> > > If you thru that rock to the side of the train, it is obvious you have (speed of the train- degree of misdirection) relative to the forward motion........
> > > get the picture?
> >
> > Hi Dennis W.,
> >
> > What I am trying to convey is that linear energy can be translated into rotational energy.
> >
> > Best,
> > BHL
>
> BHL,
>
> WRT the stride forward, obviously a linear movement, I do believe the energy from that motion can be transferred into the rotational energy.
> If the batter took the stride onto a closed hip (foot closed) then the energy from that forward (linear) motion would be lost.
> If the batter took the stride and landed with an open hip (open foot), this would allow the hip to take the energy (inducing torque) where the body can then finish with rotation. If done properly the stride forward could be used as a force to begin rotation of the lead hip, yet not happening simultaneously.
>
> Dennis W.

Dennis. With regard to BHL's argument, you might if possible observe the swing of former major league player Mark Whiten. As you may well now, Whiten hit 4 homeruns in one game and drove in 12 runs. But if you observe his side view swing, he sweeps the bat through the zone using mostly a linear push. But his follow through is rotation per its finish by which he golfs 4 homeruns. It is also interesting to observe that he uses no inward knee turn to gather strength and no torque forces from the naked eye. And in my opinion it is likely that his homeruns would have traveled much further if he had more optimum swing mechanics. But at 6ft 3in 215 lbs it is likely that his raw power was considered adequate. If you have MLB.COM you can view what I saw.