The simple double-pendulum model of the golf swing, showing key angles, lengths, and masses. For instance, m1, m2, and m3 are the masses of the arms/hands, club head, and ball, respectively; L1 is the length of the arms/hands, and L2 is the length of the club head). (a) The system before the club is released and (b) when the club is about to strike the ball.
What happens when a golf-loving researcher injures a shoulder and can't play for three months? Rod White, a metrologist (measurement scientist), used the spare time off the course to undertake an analysis that revealed the foundation of an effective golf swing. As it turns out, it's all in the wrists.
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