LΔL=4AYmg
=4π(1002−502)×10−4×2×101150×103×9.8=4×π×150×50×10−4×2×10115×105
LΔL=12π1×10−5=2.60×10−7
Four identical hollow cylindrical columns of mild steel support a big structure of mass 50×103kg. The inner and outer radii of each column are 50cm and 100cm respectively. Assuming uniform local distribution, calculate the compression strain of each column.
[use Y=2.0×1011Pa,g=9.8ms−2]
Held on 31 Aug 2021 · Verified 6 Jul 2026.
1.87×10−3
2.60×10−7
3.60×10−8
7.07×10−4
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