Mathematics · Springs
A closely coiled helical spring of stiffness 4 N/mm is connected in series with another spring of stiffness 6 N/mm. What is the equivalent stiffness of the composite spring?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 120 N/mm
- 22.4 N/mm✓
- 34.1 N/mm
- 410 N/mm
Correct answer
2.4 N/mm
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