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- Question
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is(where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)
Options- A. MS/3
- B. MS/4
- C. MS/5
- D. none of these
- Correct Answer
- MS/5
- 1. The ratio of static friction to dynamic friction is always
Options- A. equal to one
- B. less than one
- C. greater than one
- D. none of these Discuss
- 2. The moment of inertia of a square of side (a) about an axis through its centre of gravity is
Options- A. a4/4
- B. a4/8
- C. a4/12
- D. a4/36 Discuss
- 3. The maximum displacement of a body, from its mean position is called amplitude.
Options- A. Correct
- B. Incorrect Discuss
- 4. A science teacher claimed that Newton's third law of motion is involved while studying the motion of rockets. His statement is
Options- A. justified
- B. not justified Discuss
- 5. The velocity ratio of a single purchase crab winch can be increased by
Options- A. increasing the length of the handle
- B. increasing the radius of the load drum
- C. increasing the number of teeth of the pinion
- D. all of the above Discuss
- 6. A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
Options- A. towards the wall at its upper and
- B. away from the wall at its upper end
- C. downward at its upper end
- D. upward at its upper end Discuss
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Engineering Mechanics problems
Search Results
Correct Answer: greater than one
Correct Answer: a4/12
Correct Answer: Correct
Correct Answer: justified
Correct Answer: increasing the length of the handle
Correct Answer: upward at its upper end
Correct Answer: combined translation and rotational
Correct Answer: angle of banking
Correct Answer: True
Correct Answer: ml2/12
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