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(II) (a) Calculate the magnitude of the force, FM required

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 32P Chapter 9

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 32P

(II) (a) Calculate the force, \(F_{M}\), required of the "deltoid" muscle to hold up the outstretched arm shown in Fig. . The total mass of the arm is . (b) Calculate the magnitude of the force \(F_{J}\) exerted by the shoulder joint on the upper arm.

Equation Transcription:

Text Transcription:

F_{M}

F_{J}

Step-by-Step Solution:

Step-by-step solution

Step 1 of 5 ^

We are going to draw the free body diagram of the system

Shoulder joint is taken as pivot point O

Fm; The force exerted by muscle.

W: the weight of the arm/

Fj; the reaction force exerted from the joint.

dfm; the force  distance from muscle force to pivot pint

dw; the force distance from weight of the arm to pivot point.

Step 1 of 5 ^

We are going write the second condition of equilibrium as taking  the torques around pivot point to find the force exerted by muscle.

The force exerted by muscle to hold the arm.

Step 2 of 5

Chapter 9, Problem 32P is Solved
Step 3 of 5

Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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(II) (a) Calculate the magnitude of the force, FM required