Theory of Structures

A spring of mean radius 40 mm contains 8 action coils of steel (N = 80000 N/mm²), 4 mm in diameter. The clearance between the coils being 1 mm when unloaded, the minimum compressive load to remove the clearance, is_____.

  • A. 25 N
  • B. 30 N
  • C. 35 N
  • D. 40 N
Answer: Option C.

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