An 14.2-kg stone at the end of a steel (Young's modulus 2.0 x 10¹¹ N/m²) wire is being whirled in a circle at a constant tangential speed of 15.2 m/s. The stone is moving on the surface of a frictionless horizontal table. The wire is 4.15 m long and has a radius of 4.77 x 10^-3 m. Find the strain in the wire.