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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 10 - Problem 34pe
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 10 - Problem 34pe

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# In softball, the pitcher throws with the arm fully ISBN: 9780130606204 3

## Solution for problem 34PE Chapter 10

Physics: Principles with Applications | 6th Edition

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Problem 34PE

In softball, the pitcher throws with the arm fully extended (straight at the elbow). In a fast pitch the ball leaves the hand with a speed of 139 km/h. (a) Find the rotational kinetic energy of the pitcher’s arm given its moment of inertia is 0.720 kg ? m 2 and the ball leaves the hand at a distance of 0.600 m from the pivot at the shoulder. (b) What force did the muscles exert to cause the arm to rotate if their effective perpendicular lever arm is 4.00 cm and the ball is 0.156 kg?

Step-by-Step Solution:

Step-by-step solution Step 1 of 9 The formula to find the rotational kinetic energy of the arm is, Here, is the moment of inertia of the arm, is the angular velocity of the arm. (a) The formula to find the angular velocity of the arm is, Here is the velocity and is the radius.

Step 2 of 9

Step 3 of 9

##### ISBN: 9780130606204

The answer to “In softball, the pitcher throws with the arm fully extended (straight at the elbow). In a fast pitch the ball leaves the hand with a speed of 139 km/h. (a) Find the rotational kinetic energy of the pitcher’s arm given its moment of inertia is 0.720 kg ? m 2 and the ball leaves the hand at a distance of 0.600 m from the pivot at the shoulder. (b) What force did the muscles exert to cause the arm to rotate if their effective perpendicular lever arm is 4.00 cm and the ball is 0.156 kg?” is broken down into a number of easy to follow steps, and 96 words. This full solution covers the following key subjects: arm, ball, pitcher, leaves, hand. This expansive textbook survival guide covers 35 chapters, and 3914 solutions. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6. The full step-by-step solution to problem: 34PE from chapter: 10 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. Since the solution to 34PE from 10 chapter was answered, more than 991 students have viewed the full step-by-step answer.

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