Calculate the free length of the spring when the solid length is 90mm and δmax=35.75mm?(a) 145.9mm(b) 69.65mm(c) 656mm(d) 131.11mmThis question was addressed to me in an international level competition.This intriguing question comes from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design

Calculate the free length of the spring when the solid length is 90mm

1.	Calculate the free length of the spring when the solid length is 90mm and δmax=35.75mm?(a) 145.9mm(b) 69.65mm(c) 656mm(d) 131.11mmThis question was addressed to me in an international level competition.This intriguing question comes from IC Engine topic in division Design of IC Engine Components of Automotive Engine Design
Answer» Right CHOICE is (d) 131.11mm For EXPLANATION I would say: Free LENGTH= SOLID length+δmax+0.15δmax =90+35.75+0.15(35.75) = 131.11mm

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