A steel wire is used to lift heavy object. The cable has a diameter of 14.25 mm and an initial length of 33.5 m. If the cable stretches 2.50 mm, what is the mass of the heavy object? Use 20.0 x 10^10 Pa for Young’s modulus for steel. Give your answer in kg and with 3 significant figures.

Answer 1

20E10=(9.8*Mass)33.5/(.0025*PI(.001425/2)^2)

solving for mass
mass=20E10*(.0025*PI(.001425/2)^2)/33.5*9.8) kg
I get about 233kg
check my work