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  • Question

  • 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

  • Correct Answer
  • 2mr2/5 

    • Engineering Mechanics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. Moment of inertia is the

    • Options
    • A. second moment of force
    • B. second moment of area
    • C. second moment of mass
    • D. all of these
      • Discuss
    • 5. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 6. 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
    • 7. 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
      • Discuss
    • 8. 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
    • 9. 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
    • 10. 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

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