Figure 2 shows a billet before that is forged from an initial size of 2.5 mm X 2.5 mm x 25 mm to a nal height of 1.25 mm. as shown in Figure 2.. This is accomplished by using a flatface drop hammer. Assume a) sticking friction at the diework interface and h) ow stress of 18 MPa for the prevailing conditions of rate of deformation and the temperature. a} Find the force necessary to accomplish the forging. 1}} Find the total work required (Remember that work = I F iii. and that F changes with L). c} From what height would the 3 kg hammer have to he dropped? d} Compute the process efciency. n