Baseball pitching machines such as shown in are used to fire baseballs toward a batter for hitting practice. In one kind of machine, the ball is fed between two wheels that are rapidly rotating in opposite directions; as the ball is pulled in between the wheels, it rapidly accelerates up to the speed of the wheels' rims, at which point it is ejected. Part A For a machine with 35-cm-diameter wheels, what rotational frequency (in rpm) do the wheels need to pitch a 95 mph fastball? Express your answer in revolutions per minute. f = VE ΑΣΦ ? rpm
Baseball pitching machines such as shown in are used to fire baseballs toward a batter for hitting practice. In one kind of machine, the ball is fed between two wheels that are rapidly rotating in opposite directions; as the ball is pulled in between the wheels, it rapidly accelerates up to the speed of the wheels' rims, at which point it is ejected. Part A For a machine with 35-cm-diameter wheels, what rotational frequency (in rpm) do the wheels need to pitch a 95 mph fastball? Express your answer in revolutions per minute. f = VE ΑΣΦ ? rpm
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter11: Angular Momentum
Section: Chapter Questions
Problem 54P: A cylinder with rotational inertia I1=2.0kgm2 rotates clockwise about a vertical axis through its...
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For a machine with 35-cm-diameter wheels, what rotational frequency (in rpm) do the wheels need to pitch a 95 mph fastball?
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