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  • Question

  • If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and v2 are their velocities after impact, then coefficient of restitution is given by


  • Options
  • A. If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and
  • B. If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and
  • C. If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and
  • D. If u1 and u2 are the velocities of two moving bodies in the same direction before impact and v1 and

  • Correct Answer
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    • Engineering Mechanics problems

    Search Results

    • 1. If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

    • Options
    • A. change
    • B. does not change
      • Discuss
    • 2. Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

    • Options
    • A. bh3/4
    • B. bh3/8
    • C. bh3/ 12
    • D. bh3/ 36
      • Discuss
    • 3. Newton's second law motion __________ a relation between force and mass of a moving body.

    • Options
    • A. gives
    • B. does not give
      • Discuss
    • 4. The loss of kinetic energy during elastic impact is zero.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 5. A machine having an efficiency less than 50%, is known as

    • Options
    • A. reversible machine
    • B. non-reversible machine
    • C. neither reversible nor non-reversible machine
    • D. ideal machine
      • Discuss
    • 6. Concurrent forces are those forces whose lines of action

    • Options
    • A. lie on the same line
    • B. meet at one point
    • C. meet on the same plane
    • D. none of these
      • Discuss
    • 7. The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 8. Which of the following are vector quantities?

    • Options
    • A. Linear displacement
    • B. Linear velocity
    • C. Linear acceleration
    • D. all of these
      • Discuss
    • 9. The maximum acceleration of a particle moving with simple harmonic motion is

    • Options
    • A. ?
    • B. ?r
    • C. ?2r
    • D. ?/r
      • Discuss
    • 10. In ideal machines, mechanical advantage is __________ velocity ratio.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
      • Discuss

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