A cable used to lift heavy materials like steel i-beams, Physics

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A cable used to lift heavy materials like steel i-beams

A cable used to lift heavy materials like steel I-beams must be strong enough to resist breaking even under a load of 2.2 x 10⁶ Newton. For safety, the cable must support twice that load.

(a) Evaluate what cross-sectional area should the cable have if it's to be made of steel?

m²

(b) Evaluate by how much will a 7.0 m length of this cable stretch when subject to the 2.2 x10⁶ N load?

m

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