Question

2. Where is the trademark of a baseball bat, ``sweet spot'' of a tennis racket (or cricket bat), etc? If you've played baseball, you know there is a wrong way to hit the ball. If the ball hits the end of the bat or too close to your hands it stings your hands, but if you hit it ``on the trademark'' you get better power and your hands don't hurt. Both are true because the bat is pivoting around your hands and not around some other place along the axis of the bat -- ie there is no translational momentum delivered to your hands. Use (eg) an impulse of torque, conservation laws, etc to calculate the right location along the bat to contact the ball. If you grip the handle of the bat a distance b away from the center of mass, you're trying to find how far b' on the other side of the center of mass you should make contact with the ball. The physics is more complicated if you're swinging the bat, but this calculation is easiest if you assume that the bat is stationary and the ball hits the bat with some initial momentum mv0 perpendicular to the bat, and it rebounds back along the same line. This location is sometimes called the ``center of percussion,'' and it is related to the ``center of oscillation'' of a Kater's pendulum.

Answer 1

The Sweet spot of hitting the ball should be at the center of mass of bre bato. my -- gf 6 us more f. Je..coll also be .... more. Ponto xb Exa @ Notes........ t at time of impact. with le ball 9fbro de ball hits the Center the hands des't hurt of mass much