The phenomenon of war brings lot of suffering for human beings. It brings with it death and destruction. It kills the feelings of love and sympathy. The story "The Address" is based on this theme. During the war, the narrator's mother leaves all her valuable things with an acquaintance. The mother dies and many years later the narrator returns to Mrs Dorling to take back all her belongings. But the woman shows no sympathy for her. On the contrary, she behaves in a very hard hearted manner. She doesnot allow the girl to enter the house. She turns out to be a lady bereft of all human emotions. Thus we find that war leaves the world desolate not only on the physical level but also on the emotional and spiritual level.
Figure 8.9 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material?

Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following (Fig. 5.14) is a possible result after collision ?
