Question

A 50-N load falls through a height of 50 mm onto a steel bar of a diameter of 25 mm and a length of 400 mm, supported on the ground. If E = 200 GPa, what is the instantaneous stress developed in the bar and what is the change in its length?

Answer 1

The load falls on the bar producing a compressive stress in the bar and its length has instantaneous contraction.