# While punting a football, a kicker rotates his leg about

## Problem 26PE Chapter 10

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition

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Problem 26PE

While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the leg is 3.75 kg ? m2 and its rotational kinetic energy is 175 J. (a) What is the angular velocity of the leg? (b) What is the velocity of tip of the punter’s shoe if it is 1.05 m from the hip joint? (c) Explain how the football can be given a velocity greater than the tip of the shoe (necessary for a decent kick distance).

Step-by-Step Solution:

Step-by-step solution Step 1 of 4 The rotational kinetic energy of the leg is given as, Where, I is the moment of inertia of the leg and is the angular velocity. Step 2 of 4 (a) The moment of inertia of the leg is given as, Also the rotational kinetic energy of the leg is given as, The angular velocity from above is, Substitute and 175 J for . Hence, the angular velocity is .

Step 3 of 4

Step 4 of 4

##### ISBN: 9780130606204

Since the solution to 26PE from 10 chapter was answered, more than 764 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 26PE from chapter: 10 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. The answer to “While punting a football, a kicker rotates his leg about the hip joint. The moment of inertia of the leg is 3.75 kg ? m2 and its rotational kinetic energy is 175 J. (a) What is the angular velocity of the leg? (b) What is the velocity of tip of the punter’s shoe if it is 1.05 m from the hip joint? (c) Explain how the football can be given a velocity greater than the tip of the shoe (necessary for a decent kick distance).” is broken down into a number of easy to follow steps, and 85 words. This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6th. This full solution covers the following key subjects: velocity, leg, shoe, tip, football. This expansive textbook survival guide covers 35 chapters, and 3914 solutions.

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