One method of pitching a softball is called the "windmill" delivery method, in which the pitcher's arm rotates throughapproximately 360° in a vertical plane before the 198 gram ball is released at the lowest point of the circular motion. Anexperienced pitcher can throw a ball with a speed of 87.5 mi/h. Assume that the angular acceleration is uniform throughout thepitching motion, and take the distance between the softball and the shoulder joint to be 71.7 cm.(a) Determine the angular speed of the arm in rev/s at the instant of release.rev/s(b) Find the value of the angular acceleration in rev/s? and the radial and tangential acceleration of the ball just before itis released.rev/s2ac|m/s2atm/s²(c) Determine the force exerted on the ball by the pitcher's hand (both radial and tangential components) just before it isreleased.FrNFtN

Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

(a) Determine the angular speed of the arm in rev/s at the instant of release. rev/s (b) Find the value of the angular acceleration in rev/s? and the radial and tangential acceleration of the ball just before it is released. rev/s2 ac m/s?

(a) Determine the angular speed of the arm in rev/s at the instant of release. rev/s (b) Find the value of the angular acceleration in rev/s? and the radial and tangential acceleration of the ball just before it is released. rev/s2 ac m/s?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

One method of pitching a softball is called the "windmill" delivery method, in which the pitcher's arm rotates through
approximately 360° in a vertical plane before the 198 gram ball is released at the lowest point of the circular motion. An
experienced pitcher can throw a ball with a speed of 87.5 mi/h. Assume that the angular acceleration is uniform throughout the
pitching motion, and take the distance between the softball and the shoulder joint to be 71.7 cm.
(a) Determine the angular speed of the arm in rev/s at the instant of release.
rev/s
(b) Find the value of the angular acceleration in rev/s? and the radial and tangential acceleration of the ball just before it
is released.
rev/s2
ac
|m/s2
at
m/s²
(c) Determine the force exerted on the ball by the pitcher's hand (both radial and tangential components) just before it is
released.
Fr
N
Ft
N

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