Physics · Mechanical Properties of Solids
A rigid horizontal rod of length l and negligible mass is suspended at its two ends by two vertical wires of equal lengths: wire A (steel) and wire B (aluminium). The cross-sectional areas of wires A and B are 1.0 mm2 and 2.0 mm2, respectively. (Ysteel = 200 × 109 N/m2 and YAl = 70 × 109 N/m2). To achieve equal stress in both wires, a mass m must be suspended:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1closer to wire A to achieve equal strain instead.
- 2exactly at the middle of the rod.
- 3closer to wire B.✓
- 4closer to wire A.
Correct answer
closer to wire B.
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