Question: A 5 m m diameter prestressing wire for a pre - tensioned concrete slab being manufactured in a factory is 7 0 m long and

A 5mm diameter prestressing wire for a pre-tensioned concrete slab being manufactured in a factory is 70m long and is stretched by 210mm using a hydraulic jack. Assuming the Young's modulus of elasticity of the steel is 200GPa, what is the resulting force (in kN) in the wire when fully stretched?
A 5 m m diameter prestressing wire for a pre -

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