The Double Pendulum Effect A physical pendulum can be "...a solid object that swings back and forth on a pivot under the influence of gravity"(Physics for Science and Engineers pg. 394) The arms are the first of the Double pendulum. Hitting a powerful drive takes more than just strength and coordination, it also requires the physics concepts of torque, centripetal force and something known as the double pendulum effect. Quantification of the Double Pendulum Theodore Jorgensen was a professor of physics at the University of Nebraska.

A Driven Double Pendulum The improved model can vary: Torque applied to the inner arm of the pendulum, to model the work done by the golfer via the torso and shoulders Torque applied to the outer arm of the pendulum, to model work done by the golfers hands "Science of Golf" is produced in partnership with the United States Golf Association and Chevron.

The golf club swings in response to the movement of the torso and because of the freedom facilitated by the hinge of the wrists. The golf swing is modelled as a double pendulum. A key element in the physics of this “double pendulum” is that the lower pendulum (wrists, hands, and golf club) does not swing because of a concerted effort. As you swing, your arms move around your anchored shoulders.

Analysis of the physics of golf was a lifetime passion for him. This model and its variations have been used extensively by researchers in determining the effect that various swing parameters have on clubhead speed. In 1994, he published the first edition of his book, " The Physics of Golf ".