GED 1201 – Engineering Mechanics
Question Bank
1. Differentiate kinetics and kinematics.
2. Define the term engineering mechanics.
3. State Lami’s Theorem.
4. What do you understand by unit vector?
5. What do you mean by free body diagram?
6. Write the equation for the Lames theorem with a suitable sketch.
7. Write the conditions/equilibrium conditions for the system in 2D.
8. List the conditions/equilibrium conditions for the system in 3D.
9. What do you mean by positional vectors?
10. Why it is necessary to determine the tension in the ropes?
11. A rigid body will lie in the elastic limit – True or False.
12. Why we don’t consider the materials in the plastic limit?
13. List the notations used for the horizontal and vertical components in the resolution of
forces.
14. The unknown angles in a problem can be determined by the distances provided for the right-
angle triangle is known as?
15. A force (F) is said to be acting along the ‘Z’ axis write its vector notation.
16. Assume a weight (W) is suspended at a point. Consider the whole system in 3D and write the
vector notation for the weight suspended.
17. Why the reaction forces are always perpendicular to the supports?
18. Illustrate schematically hinged and roller support.
19. For a vertical force the horizontal distance is always not perpendicular – True or False.
20. Why the unit of the moment is Nm or kNm?
21. A fixed support will have one reaction force and a moment – True or False.
22. Sketch an overhanging beam. Assume suitable dimensions for the beam structure.
23. What is the need to determine the reaction forces in a structure?
24. Why do we need to convert the UDL and UVL to a point load?
25. The conversion of UDL to point load will act at the midpoint of the total UDL length. Justify
your answer.
26. Schematically locate the location of UVL 20 N/m which is acting over a span of 5 m beam
element. Assume the maximum load is acting at the extreme left-hand side of the beam
element. Whereas the minimum load is at the extreme right-hand side of the beam element.
27. Define centroid.
28. Differentiate between centre of gravity and centroid.
29. Moment of inertia of a circular area about an axis perpendicular to the area is called ____.
30. Moment of inertia of a thin ring of external diameter ‘D’ and internal diameter ‘d’ about its
centroidal axis is ______.
31. Define parallel axis theorem.
32. List any two applications of the moment of inertia.
33. Find the moment of inertia of a square of side 25 mm.
34. Find the moment of inertia of a circle of radius 50 mm.
35. State the significance of moment of inertia of a section.
36. What do you mean by dry friction?
37. The motion of the particle is defined by the relation s = 2t3 – 3t2 – 8 where s is expressed in
meters and t in seconds. Determine the velocity when t = 5s.
38. Define Linear Momentum.
39. State all the three Newton’s law of motion.
40. A lift with a mass of ‘m’ kg is moving up and down. Draw pictorially the direction of inertia
force in both the cases.
41. A block weighs 100 N is placed on a rough horizontal surface is being pulled by a force of 200
N. Draw the free body diagram of it.
42. State parallel axis theorem with neat sketch.
43. Locate the centroid and calculate the moment of inertia about the centroidal axis of a semi-
circular lamina of radius 2 m.
44. Define D’Alembert’s Principle
45. What is meant by limiting friction?
46. Define angle of repose.
47. When do we say that the motion of a body is impending?
48. List any four applications of the friction.
49. When shall the friction between two contact surfaces be zero?
