A light helical spring is fabricated by wrapping ¾ -in diameter wire around a forming cylinder 10 inches in diameter. How many number of turns are required to allow an elongation of 3.5 inches. The shearing stress is limited to 18 ksi. Use G = 12 x 106 psi. Answer: n = 5 turns

A light helical spring is fabricated by wrapping ¾ -in diameter wire around a forming cylinder 10 inches in diameter. How many number of turns are required to allow an elongation of 3.5 inches. The shearing stress is limited to 18 ksi. Use G = 12 x 106 psi. Answer: n = 5 turns

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.5.7P: -7 A steel tube (G = 11.5 x 106 psi) has an outer diameter d2= 2.0 in. and an inner diameter dt=1,5...

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

A light helical spring is fabricated by wrapping ¾ -in diameter wire around a forming cylinder 10 inches
in diameter. How many number of turns are required to allow an elongation of 3.5 inches. The shearing
stress is limited to 18 ksi. Use G = 12 x 106 psi.

Answer: n = 5 turns

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