A mass of16.5kg fastened to the end of a steel wire with an unstretched length of 0.600 m is whirled in a vertical circle having angular velocity 2.40rev/s at the bottom of the circle. The cross-sectional area of wire is 1.30 ×10-2 cm2.
Compute the elongation of the wire if the mass is at the lowest point of the path. (Young's modulus of steel is 2.0 x 1011 Pa.)