(Solution Download) A steel wire, 150 m long, weighs 20 N per metre length. It is placed on a horizontal floor and...

A steel wire, 150 m long, weighs 20 N per metre length. It is placed on a horizontal
floor and pulled slowly along by a horizontal force applied to one end. If this force
measures 600 N, estimate the increase in length of the wire due to its being towed,
assuming a uniform coefficient of friction. Take the density of steel as 7840 kg/m3 and
Young's modulus as 200 GN/m2. (RNEC)