Question:
A metal wire can withstand a maximum tension of 80 N. If the wire is cut into four equal parts, then each part can withstand a maximum tension of:
A metal wire can withstand a maximum tension of 80 N. If the wire is cut into four equal parts, then each part can withstand a maximum tension of:
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Strength depends on cross-sectional area, not length.
Updated On: Jun 17, 2026
- 80 N
- 20 N
- 320 N
- 40 N
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The Correct Option is A
Solution and Explanation
Step 1: Maximum tension depends on cross-sectional area, not length.
Step 2: Cutting wire into parts reduces length but does NOT change cross-sectional area.
Step 3: Breaking strength is material property: \[ T_{max} = \sigma_{max} \cdot A \]
Step 4: Since A remains same, each piece has same strength.
Hence each part can withstand 80 N.
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