5. A strain gauge is used to weigh an object that is mounted on a copper column of 6-in diameter. If the weight of the object is 1 pound (i.e. W=1 lb), find the resistance change AR of the strain gauge. (Note: Young's Modulus Elasticity of Copper E =11.73 x 1010 N/m²³)

5. A strain gauge is used to weigh an object that is mounted on a copper column of 6-in diameter. If the weight of the object is 1 pound (i.e. W=1 lb), find the resistance change AR of the strain gauge. (Note: Young's Modulus Elasticity of Copper E =11.73 x 1010 N/m²³)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

5. A strain gauge is used to weigh an object that is mounted on a copper column of 6-in
diameter. If the weight of the object is 1 pound (i.e. W=1 lb), find the resistance change
AR of the strain gauge.
(Note: Young's Modulus Elasticity of Copper E =11.73 × 1010 N/m²)

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