1. What do you understand by coplaner and concurrent forces? Give any five real life examples of these two system of forces. 2 Define "Free body diagram" with suitable examples. 3 Briefly define Radius of gyration 4 Briefly define Mass moment of inertia 5 Determine the moment of inertia of Plane lamina as shown in figure 1.0, about its base AB. 6. Define law of machine. 7. What do you understand by reversible and irreversible machines? Explain with suitable examples. 8. What is Local attraction? Define. 9. Define Fore bearing and Back bearing of a line. 10. What is contour interval? Also show the properties of contour lines.