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  • Question

  • The friction experienced by a body, when at rest, is known as


  • Options
  • A. static friction
  • B. dynamic friction
  • C. limiting friction
  • D. coefficient of friction

  • Correct Answer
  • static friction 

    • Engineering Mechanics problems

    Search Results

    • 1. The acceleration of a body sliding down an inclined surface is

    • Options
    • A. g sin ?
    • B. g cos ?
    • C. g tan ?
    • D. none of these
      • Discuss
    • 2. The moment of inertia of a solid sphere of mass m and radius r is

    • Options
    • A. 2mr2/3
    • B. 2mr2/5
    • C. mr2
    • D. mr2/2
      • Discuss
    • 3. The centre of gravity a T-section 100 mm x 150 mm x 50 mm from its bottom is

    • Options
    • A. 50mm
    • B. 75mm
    • C. 87.5mm
    • D. 125mm
      • Discuss
    • 4. The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

    • Options
    • A. P = mW - C
    • B. P = m/W + C
    • C. P = mW + C
    • D. P = C - mW
      • Discuss
    • 5. Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.

    • Options
    • A. two times
    • B. same
    • C. half
      • Discuss
    • 6. Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

    • Options
    • A. nine times
    • B. six times
    • C. four times
    • D. two times
      • Discuss
    • 7. Coplaner non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

    • Options
    • A. meet
    • B. do not meel
      • Discuss
    • 8. The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

    • Options
    • A. D + d
    • B. D - d
    • C. D x d
    • D. D / d
      • Discuss
    • 9. One kg force is equal to

    • Options
    • A. 7.8 N
    • B. 8.9 N
    • C. 9.8 N
    • D. 12 N
      • Discuss
    • 10. In order to determine the effects of a force, acting on a body, we must know

    • Options
    • A. magnitude of the force
    • B. line of action of the force
    • C. nature of the force i,e. whether the force is push or pull
    • D. all of the above
      • Discuss

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