College Physics

1st Edition
Paul Peter Urone + 1 other
Publisher: OpenStax College
ISBN: 9781938168000

College Physics

1st Edition
Paul Peter Urone + 1 other
Publisher: OpenStax College
ISBN: 9781938168000


Chapter 11, Problem 77PE
Textbook Problem

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 × 10 9 N / m 2 ?

Expert Solution
To determine


The pressure created when the disk between the spinal vertebrae is compressed.

Explanation of Solution


The compressional force

  F=5000 N

The radius of the disc

  r=2.00 cm=2.00×102m

Formula used:

The pressure created when the disk is compressed is given by


Here, A is the area of the disk, given by,



Calculate the area of the disk.

  A=πr2=(3.14)(2.00× 10 2m)2=1

Expert Solution
To determine


The deformation produced in the disk.

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Chapter 11 Solutions

College Physics
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