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# Construct Your Own a method for measuring the mass of a

ISBN: 9780130606204 3

## Solution for problem 40PE Chapter 9

Physics: Principles with Applications | 6th Edition

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Problem 40PE

Construct Your Own a method for measuring the mass of a person’s arm in anatomical studies. The subject lies on her back, extends her relaxed arm to the side and two scales are placed below the arm. One is placed under the elbow and the other under the back of her hand. Construct a problem in which you calculate the mass of the arm and find its center of mass based on the scale readings and the distances of the scales from the shoulder joint. You must include a free body diagram of the arm to direct the analysis. Consider changing the position of the scale under the hand to provide more information, if needed. You may wish to consult references to obtain reasonable mass values.

Step-by-Step Solution:

Solution 40PE Step-by-step solution Step 1 of 4 A girl lies on her back, extends her relaxed arm to the side and two scales are placed below the arm. One is placed under the elbow and the other under the back of her hand. Calculate the mass of the arm and find its center of mass based on the scale readings and the distances of the scales from the shoulder joint. Step 2 of 4 The free body diagram of arm is drawn below,

Step 3 of 4

Step 4 of 4

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