Discussion
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- Question
The moment of inertia of a sphere of mass m and radius r, about an axis tangential to it, is
Options- A. 2mr2/3
- B. 2mr2/5
- C. 7mr2/3
- D. 7mr2/5
- Correct Answer
- 7mr2/5
- 1. When a particle moves along a circular path, its acceleration has two components, one is normal component and the other is tangential component of acceleration.
Options- A. True
- B. False Discuss
- 2. Two equal and opposite parallel forces whose lines of action are different form a couple.
Options- A. Correct
- B. Incorrect Discuss
- 3. The time of flight (t) of a projectile on a horizontal plane is given by
Options- A.
- B.
- C.
- D.
Discuss
- 4. The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by
Options- A. P + Q
- B. P - Q
- C. P / Q
- D. Q / P Discuss
- 5. If the gravitational acceleration at any place is doubled, then the weight of a body will be
Options- A. g/2
- B. g
- C. 2g
- D. 2g Discuss
- 6. The velocity ratio for the third system of pulleys is
Options- A. n
- B. n2
- C. 2n
- D. 2n - 1 Discuss
- 7. The velocity ratio for the first system of pulleys is(where n is the number of pulleys.)
Options- A. n
- B. n2
- C. 2n
- D. 2n - 1 Discuss
- 8. Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to
Options- A. area of the triangle
- B. twice the area of the triangle
- C. half the area of the triangle
- D. none of these Discuss
- 9. A machine which is capable of doing work in the reversed direction, after the effort is removed, is called a non-reversible machine.
Options- A. Yes
- B. No Discuss
- 10. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
Options- A. v
- B. 2v
- C. 4v
- D. 8v Discuss
Engineering Mechanics problems
Search Results
Correct Answer: True
Correct Answer: Correct
Correct Answer:
Correct Answer: P - Q
Correct Answer: 2g
Correct Answer: 2n - 1
Correct Answer: 2n
Correct Answer: twice the area of the triangle
Correct Answer: No
Correct Answer: 2v
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