Physics – Instrumentation and Detectors
Scientific paper
2010-01-06
Physics
Instrumentation and Detectors
23 pages, 9 figures
Scientific paper
The motion of the golf club is measured using two accelerometers mounted at different points along the shaft of the golf club, both sensitive to acceleration along the axis of the shaft. The resulting signals are resolved into differential and common mode components. The differential mode, a measure of the centripetal acceleration of the golf club, is a reasonable proxy for club speed and can be used to understand details of tempo, rhythm, and timing. The common mode, related to the acceleration of the hands, allows insight into the torques that generate speed in the golf swing. This measurement scheme is used in a comparative study of twenty-five golfers in which it is shown that club head speed is generated in the downswing as a two step process. The first phase involves impulsive acceleration of the hands and club. This is followed by a second phase where the club is accelerated while the hands decelerate. This study serves to emphasize that the measurement scheme yields a robust data set which provides deep insight into the tempo, rhythm, timing and the torques that generate power in the golf swing.
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