Mathematics · Work and Energy
The stiffness of a spring is 20 N/cm. Calculate the work done to stretch the spring by 7 cm from its unstretched position.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12.50 joules
- 24.90 joules✓
- 3140 joules
- 41.40 joules
Correct answer
4.90 joules
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