Two wires are connected to a rigid bar as shown in the figure, and a weight of 9 000 N is applied. The cross-sectional area of the left wire is 60 mm?, and its E= 200 000 MN/m² ; the cor- responding quantities for the right wire are 120 mm², and E = 70 000 MN/m². Calculate the vertical displacement of the weight. 2-20. %3D

Two wires are connected to a rigid bar as shown in the figure, and a weight of 9 000 N is applied. The cross-sectional area of the left wire is 60 mm?, and its E= 200 000 MN/m² ; the cor- responding quantities for the right wire are 120 mm², and E = 70 000 MN/m². Calculate the vertical displacement of the weight. 2-20. %3D

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

Two wires are connected to a rigid bar
as shown in the figure, and a weight of 9 000 N
is applied. The cross-sectional area of the left wire
is 60 mm?, and its E= 200 000 MN/m²; the cor-
responding quantities for the right wire are
120 mm?, and E = 70 000 MN/m². Calculate the
vertical displacement of the weight.
2-20.
%3D
1.50 m
9 000 N
0.50 m
1.00 m
PROB. 2 – 20

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