The grandmother told the family that her end was near. She told everyone that as she had omitted to pray in the last phase of her life so she was not going to waste any more time talking to them. She lay peacefully in bed praying and telling her beads.
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 ?
