Mathematics · Mechanical Properties of Solids
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Δl on applying a force F, how much force is needed to stretch the second wire by the same amount?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14 F
- 2F
- 36 F
- 49 F✓
Correct answer
9 F
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