(Solution) - A golf ball weighs 0 102 lbf -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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A golf ball weighs 0.102 lbf and has a diameter of 1.7 in. A professional golfer strikes the ball at an initial velocity of 250 ft/s, an upward angle of 20°, and a backspin (front of the ball rotating upward). Assume that the lift coefficient on the ball (based on frontal area) follows Fig. P7.108. If the ground is level and drag is neglected, make a simple analysis to predict the impact point
(a) Without spin and
(b) With backspin of 7500 r/min.