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During heavy lifting, a disk between spinal vertebrae is

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 77PE Chapter 11

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 77PE

During heavy lifting, a disk between spinal vertebrae is subjected to a 5000-N compressional force. (a) What pressure is created, assuming that the disk has a uniform circular cross section 2.00 cm in radius? (b) What deformation is produced if the disk is 0.800 cm thick and has a Young’s modulus of 1.5×109 N/m2 ?

Step-by-Step Solution:

Problem 77PE

Solution 77 PE

Step 1 of 4:

In this question, we need to find the pressure created on spinal cord disk

In part (b) we need to find the deformation produced

Part a:

Data given

Compression force

Radius of disk

Thickness of disk

Young’s modulus

Step 2 of 4:

We shall find the area of the disk, using

        

                                

Substituting for  we have

                                

                                

Thus we have area of the disk as

Step 3 of 4

Chapter 11, Problem 77PE is Solved
Step 4 of 4

Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

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