A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder 150 mm in diameter. Compute the number of turns required to permit an elongation of 100 mm without exceeding a shearing stress of 140 MPa. Use the equation for light spring and G= 83 MPa. Answer: n = 17.9 turns

Structural Analysis
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Chapter2: Loads On Structures
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5. A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder
150 mm in diameter. Compute the number of turns required to permit an elongation of 100 mm
without exceeding a shearing stress of 140 MPa. Use the equation for light spring and G= 83
MРа.
Answer: n = 17.9 turns
Transcribed Image Text:5. A helical spring is made by wrapping steel wire 20 mm in diameter around a forming cylinder 150 mm in diameter. Compute the number of turns required to permit an elongation of 100 mm without exceeding a shearing stress of 140 MPa. Use the equation for light spring and G= 83 MРа. Answer: n = 17.9 turns
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