Physics · Mechanics of Springs
A helical coil spring with wire diameter d and coil diameter D is subjected to an external load. A constant ratio between d and D must be maintained such that the extension of the spring is independent of the absolute values of d and D. What is this required constant ratio?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1d3/4/D4
- 2D4/3/d3
- 3d4/D4
- 4D3/d4✓
Correct answer
D3/d4
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