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- Question
A circular hole of 50 mm diameter is cut out from a circular disc of 100 mm diameter as shown in the below figure. The centre of gravity of the section will lie
Options- A. in the shaded area
- B. in the hole
- C. at O
- Correct Answer
- in the shaded area
- 1. The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
Options- A. True
- B. False Discuss
- 2. The law of motion involved in the recoil of gun is
Options- A. Newton's first law of motion
- B. Newton's second law of motion
- C. Newton's third law of motion
- D. none of these Discuss
- 3. In order to double the period of simple pendulum, the length of the string should be
Options- A. halved
- B. doubled
- C. quadrupled Discuss
- 4. The centre of gravity of a hemisphere lies at a distance of 3r / 8 from its base measured along the vertical radius.
Options- A. Correct
- B. Incorrect Discuss
- 5. The velocity of a particle moving with simple harmonic motion is __________ at the mean position.
Options- A. zero
- B. minimum
- C. maximum Discuss
- 6. Mass moment of inertia of a thin rod about its one end is __________ the mass moment of inertia of the same rod about its mid-point
Options- A. same as
- B. twice
- C. thrice
- D. four times Discuss
- 7. Frequency of vibrations means the number of cycles per second.
Options- A. Yes
- B. No Discuss
- 8. If a pendulum is taken 1 km below the earth surface in a mine, it will __________ in time.
Options- A. gain
- B. loose Discuss
- 9. The moment of inertia of a square of side a about its base is a4/ 3.
Options- A. True
- B. False Discuss
- 10. If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
Options- A. g/2
- B. g/3
- C. g/4
- D. none of these Discuss
Engineering Mechanics problems
Search Results
Correct Answer: False
Correct Answer: Newton's third law of motion
Correct Answer: quadrupled
Correct Answer: Correct
Correct Answer: maximum
Correct Answer: four times
Correct Answer: Yes
Correct Answer: gain
Correct Answer: True
Correct Answer: none of these
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