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Part A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight density y = 0.285 lb/in°. Assume Sy, = 0.6Sut - Find Expr-

Part A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight density y = 0.285 lb/in°. Assume Sy, = 0.6Sut - Find Expr-

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Part A A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter Find the shear stress at the initial deflection. Express your answer in pounds per square inch to three significant figures. unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight 0 ΑΣφ vec ? density y = 0.285 lb/in. Assume Sys = 0.6.Sut - Ti = 51974.5 psi Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Find the mean stress. Express your answer in pounds per square inch to three significant figures. vec ? Tm = psi Submit Request Answer
Transcribed Image Text:Part A A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter Find the shear stress at the initial deflection. Express your answer in pounds per square inch to three significant figures. unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight 0 ΑΣφ vec ? density y = 0.285 lb/in. Assume Sys = 0.6.Sut - Ti = 51974.5 psi Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Find the mean stress. Express your answer in pounds per square inch to three significant figures. vec ? Tm = psi Submit Request Answer
A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter Part C unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight density y = 0.285 lb/in. Assume Sys = 0.6.Sut . Find the alternating stress in the coil. Express your answer in pounds per square inch to three significant figures. vec ? Ta = psi Submit Request Answer Part D Find the fatigue safety factor for infinite life in shear. Express your answer using three significant figures. ΑΣφ ? vec Njs = Submit Request Answer
Transcribed Image Text:A helical compression spring is required to provide a minimum force of 150 lb at installation and have a working deflection of 1 in. The spring rate is 75 lb/in. The coil must fit in a 2.1-in-dia hole with 0.1 in clearance. Use 0.25-in diameter Part C unpeened music wire and squared/ground ends. Use a 15% clash allowance, shear modulus G = 11.5 Mpsi, and weight density y = 0.285 lb/in. Assume Sys = 0.6.Sut . Find the alternating stress in the coil. Express your answer in pounds per square inch to three significant figures. vec ? Ta = psi Submit Request Answer Part D Find the fatigue safety factor for infinite life in shear. Express your answer using three significant figures. ΑΣφ ? vec Njs = Submit Request Answer
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