Chapter 4, Problem 4/069The pyramidal truss section BCDEF is symmetric about the vertical x-z plane as shown. Cables AE, AF, and AB support a 3.0-kN load. Determine the force in member BE. The force is positiveif in tension, negative if in compression.350 mm350 mm400 mm400 mm420 mmAnswer: BE=D2the tolerance is +/-2%380mmC380mm3.0 kNKN

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Engineering

Mechanical Engineering

PB

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter1: Tension, Compression, And Shear

Section: Chapter Questions

Problem 1.9.9P: A lifeboat hangs from two ship's davits. as shown in the figure. A pin of diameter d = 0.80 in....

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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

Chapter 4, Problem 4/069
The pyramidal truss section BCDEF is symmetric about the vertical x-z plane as shown. Cables AE, AF, and AB support a 3.0-kN load. Determine the force in member BE. The force is positive
if in tension, negative if in compression.
350 mm
350 mm
400 mm
400 mm
420 mm
Answer: BE=
D
2
the tolerance is +/-2%
380
mm
C
380
mm
3.0 kN
KN

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