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  • Question

  • The coefficient of restitution for elastic bodies is one.


  • Options
  • A. Correct
  • B. Incorrect

  • Correct Answer
  • Incorrect 

    Explanation
    Coefficient of restitution for elastic bodies is 0 - 1.

    Coefficient of restitution for perfect elastic bodies is 1.

    Engineering Mechanics problems

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    • 1. Moment of inertia of a circular section about an axis perpendicular to the section is

    • Options
    • A. ?d3/16
    • B. ?d3/32
    • C. ?d4/32
    • D. ?d4/64
      • Discuss
    • 2. Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 3. Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 4. If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is __________ the momentum of body having mass m2.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
      • Discuss
    • 5. A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
      • Discuss
    • 6. If a number of forces are acting at a point, theirresultant will be inclined at an angle ? with the horizontal, such that

    • Options
    • A. tan ? = ?H/?V
    • B. tan ? = ?V/?H
    • C. tan ? = ?Vx?H
    • D.
      • Discuss
    • 7. The distance, between the point of projection and the point where the projectile strikes the ground, is known as range.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 8. 
      The above figure shows the two equal forces at right angles acting at a point. The value of force R acting along their bisector and in opposite direction is

    • Options
    • A. P/2
    • B. 2P
    • C.
    • D.
      • Discuss
    • 9. When a particle moves along a circular path with uniform velocity, there will be no tangential acceleration.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 10. The path of the projectile is a parabola.

    • Options
    • A. True
    • B. False
      • Discuss

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