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- Question
When a body of mass moment of inertia I (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is
Options- A. I?
- B. I?2
- C. 0.5I?
- D. 0.5I?2
- Correct Answer
- 0.5I?2
- 1. The cartesian equation of trajectory is(where u = Velocity of projection, ? = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
Options- A.
- B.
- C.
- D.
Discuss
- 2. The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is
Options- A. ml2/4
- B. ml2/ 6
- C. ml2/8
- D. ml2/12 Discuss
- 3. A body is said to move or vibrate with simple harmonic motion if its acceleration is directed towards the mean position.
Options- A. True
- B. False Discuss
- 4. The slope on the road surface generally provided on the curves is known as
Options- A. angle of friction
- B. angle of repose
- C. angle of banking
- D. none of these Discuss
- 5. The motion of a wheel of a car is
Options- A. purely translation
- B. purely rotational
- C. combined translation and rotational
- D. none of these Discuss
- 6. All the steel trusses of the bridges, have one of their end roller supported, and other end hinged. The main advantage of such a support is that the truss remains stable.
Options- A. True
- B. False Discuss
- 7. The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is
Options- A. 20N
- B. 100N
- C. 500N
- D. none of these Discuss
- 8. Two equal and opposite parallel forces whose lines of action are different, can be replaced by a single force parallel to the given forces.
Options- A. Correct
- B. Incorrect Discuss
- 9. The centre of gravity of a rectangle lies at a point where its two diagonals meet each other.
Options- A. Agree
- B. Disagree Discuss
- 10. The time of flight of a projectile on downward inclined plane depends upon
Options- A. angle of projection
- B. angle of inclination of the plane
- C. both (a) and (b)
- D. none of these Discuss
Engineering Mechanics problems
Search Results
Correct Answer:
Correct Answer: ml2/12
Correct Answer: True
Correct Answer: angle of banking
Correct Answer: combined translation and rotational
Correct Answer: True
Correct Answer: 500N
Correct Answer: Incorrect
Correct Answer: Agree
Correct Answer: both (a) and (b)
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