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# Solved: A 75-kg man stands on his toes by exerting an

## Problem 33PE Chapter 9

College Physics | 1st Edition

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College Physics | 1st Edition

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Problem 33PE

A 75-kg man stands on his toes by exerting an upward force through the Achilles tendon, as in Figure 9.42. (a) What is the force in the Achilles tendon if he stands on one foot? (b) Calculate the force at the pivot of the simplified lever system shown—that force is representative of forces in the ankle joint.

Step-by-Step Solution:

Part (a)

Step 1 of 4:

A man applies an upward force through Achilles tendon to stand on his toes. We are going to find the upward force applied to the Achilles tendon. The forces acting on the foot are represented in the free-body diagram. There are three forces acting on the system.

The mass of the man

The acceleration due to gravity

is the force acting through the Achilles tendon (upward)

is the force acting at the pivot (downward)

is the normal acting upward and equal to the weight in the opposite direction (upward)

Step 2 of 4:

The weight of the man is expressed as

Step 3 of 4

Step 4 of 4

##### ISBN: 9781938168000

College Physics was written by and is associated to the ISBN: 9781938168000. This full solution covers the following key subjects: Force, stands, tendon, Achilles, man. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. Since the solution to 33PE from 9 chapter was answered, more than 1091 students have viewed the full step-by-step answer. The answer to “A 75-kg man stands on his toes by exerting an upward force through the Achilles tendon, as in Figure 9.42. (a) What is the force in the Achilles tendon if he stands on one foot? (b) Calculate the force at the pivot of the simplified lever system shown—that force is representative of forces in the ankle joint.” is broken down into a number of easy to follow steps, and 57 words. The full step-by-step solution to problem: 33PE from chapter: 9 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. This textbook survival guide was created for the textbook: College Physics , edition: 1.

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