Question 8: A steel helical compression spring is to be loaded with 135N load and is to have a deflection of 9.4 mm. The shearing stress is to be 250MPa with a modulus of rigidity of 79.31GPa. The mean radius is to be 10 mm. i) Determine the actual diameter and the wire number of the spring using the standard tables. ii) The actual mean radius iii) The number of active coils iv) The volume of the spring material.
Question 8: A steel helical compression spring is to be loaded with 135N load and is to have a deflection of 9.4 mm. The shearing stress is to be 250MPa with a modulus of rigidity of 79.31GPa. The mean radius is to be 10 mm. i) Determine the actual diameter and the wire number of the spring using the standard tables. ii) The actual mean radius iii) The number of active coils iv) The volume of the spring material.
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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Transcribed Image Text:Question 8:
A steel helical compression spring is to be loaded with 135N load and is to have a deflection of
9.4 mm. The shearing stress is to be 250MPa with a modulus of rigidity of 79.31GPa. The mean
radius is to be 10 mm.
i) Determine the actual diameter and the wire number of the spring using the standard tables.
ii) The actual mean radius
iii) The number of active coils
iv) The volume of the spring material.
Question 9:
Repeat question 8, when the designer decides to use wire No.9 to make the spring. Retain the
value of the mean radius as 10 mm and the deflection as 9.4mm. The shearing stress is to be
500MPa with a modulus of rigidity of 79.31GPa
i) Determine the actual diameter and the wire number of the spring using the standard tables.
i) The actual mean radius
ii) The number of active coils
iii) The volume of the spring material.
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