The Trampoline Effect. Amilcah Gomes February 2, 2005 PHY3091 - 01. The Trampoline Effect. Introduction The Trampoline Effect in Baseball The Trampoline Effect in Tennis The Trampoline Effect in Golf. Introduction.
February 2, 2005
PHY3091 - 01
Figure 1. Velocity diagram describing the swing of a baseball bat before impact, upon contact, and after impact with a pitched ball.
Figure 2. A comparison between batted ball speeds for balls hit with a wooden bat (orange) and an aluminum bat (blue). The horizontal axis represents the bat’s swing speed. Plotting the data as such normalizes the results, removing the effect of different moments-of-inertia.
Figure 3. Typical force at the base of index finger (IF) and onlittle finger side (G) of the hand in an off-center impactof a tennis forehand with an eastern grip. Note that the forces of frame vibrations are smaller than the pattern of impulsive loading and are damped out in less than 1/10th of a second.
Figure 4. PGA Average Driving Distance (1968-2001). Note the sudden increase from 1.0 foot per year from 1968 to 1995 to 7.2 feet per year from 1995 to 2001.
Figure 5. Actual vs. Adjusted Scores: PGA Tour (1968-2001). Note the major decrease from 1995 to 2001.