Hey, do you ever play baseball? :-) Me yes and I really like it. However, I don´t understand physics of basseball. Today, I found one interesting about it. Let us consider the following model of a baseball player hitting a ball. Baseball bat is a thin homogeneous rod of length L and mass m. The bat can only rotate around an axis perpendicular to the axis of the bat that is located at its end. The bat is rotating with an angular velocity ω. How far from the end of the bat should the player hit the ball in order to minimize the force with which the bat acts on the player's hands? I don´t have any great idea about it... It is it pendulum, but what more? I know some formulas about pendulum, but I don't know, how can I use angular velocity ω... I found a lot of interesting pages: http://www.physics.usyd.edu.au/~cross/baseball.html http://www.acs.psu.edu/drussell/bats/cop.html Have you got any idea how to use angular velocity ω in formula of question?