A HYSD steel bar is 400 mm long. The lengths of the parts AB and BC of the bar is 200 mm each. It is loaded as P1 = 2000 kg and P2 = 1000 kg. Take diameter of AB as 2 cm and BC as 1 cm. The ratio of stresses in part AB to stresses in part BC is __________

A HYSD steel bar is 400 mm long. The lengths of the parts AB and BC of the bar is 200 mm each. It is loaded as P1 = 2000 kg and P2 = 1000 kg. Take diameter of AB as 2 cm and BC as 1 cm. The ratio of stresses in part AB to stresses in part BC is __________ Correct Answer 0.5

The stress in AB = Pa/Aa = 2000/π/4 ×4 = the stress in BC = Pb/Ab = 1000/π/4 × 1 Pa/Pb = 2000/4 × 1000 = 0.5.
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The Alaskan pipeline ends
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What is the capacity of the Alaskan pipeline?
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What are "bents"?