Mechanics MCQs 01

1. The minimum number of forces required for equilibrium are

2. The range of the projectile is maximum if the angle of projection is __________ degree.

3. The center of a mass of thin rod of length l is

4. center of mass of hollow right circular cone from O is

5. The friction is maximum if it is

6. The resultant of the system of forces acting on a rigid body is always

7. For a particle moving in a central force , the angular momentum is

8. The orbit of the planet is

9. The ratio of coefficient of static friction and coefficient of kinetic friction  is

10. The amplitude of the oscillation of S.H.M is doubled then its time period is

11. The path described by the particle moving with zero velocity and acceleration is a

12. If three forces acting on a body in equilibrium, then they

13. The general motion of a rigid body is a

14. Tension in a string is

15. The time rate of change of angular momentum is

16. When a body in contact with another body is in any position of equillibrium but not equillibrium, then the friction exerted is known as

17. The general motion of a rigid body is

18. A particle moving in a bounded region is perform

19. The elastic string can only be extended by applying a

20. A string is called linear string if it obeys

21. If plane motion rotates about a fixed axis, then the system has—— degree of freedom.

22. In general plane motion, the degree of freedom of system is

23. The axis about which the body rotates is known as

24. When a body is rotating about instantaneous axis through a fixed point, its angular velocity can be expressed in terms of

25. The plane containing the orbit of earth’s motion around the sun is called

26. The equation is inclined to ecliptic about_________ degree

27. Which of the following has greatest effect on earth

28. The axis relative to the products of inertia are zero are known as

29. The axis relative to the products of inertia are zero are known as

30. Number of principal axes of a rigid body is

31. The principal moments of inertia are always