Qs ...1. A steel cable of a hoist has a cross-section of 80 mm? and a length of 30 m. The hoist is used to lift a load weighing 500 kg. The free length of the cable is 30 m. Assume all deformation is elastic. A steel cable with 31.75 mm in diameter and 15.24 m long is used to lift a 20,000 kg load without permanently deforming. The modulus of elasticity of the steel is 207 GPa. Evaluate the length of the cable during lifting.

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A: This question is based on the concept of strength of material. It needs simple elongation formula.

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