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  1. C

    I don't understand 2007 HSC Question 10.

    A mild steel test piece was made into 1/4 scale. It was stretched to 200kN tension until destroyed. At what minimum force would you expect the full size component to fail? The answer is 3200kN. How do you do this?
  2. C

    Hollow cylinder vs Solid cylinder. Which has a better strength to weight ratio?

    Solid cylinder: 12 mm diameter Second moment of area = 1.02 * 10^(-9) m^4 BM = 12 kNm Hollow cylinder: 25 mm diameter 1.2 mm wall thickness Second moment of area = 6.37 * 10^(-9) m^4 BM = 12 kNm Which has a better strength to weight ratio? What the maximum bending stress of each? Why would...
  3. C

    Is unsecured notes considered an equity finance or debt finance.

    Ditto.
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