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  • Question

  • 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

  • Correct Answer
  • P = mW + C 

    • Engineering Mechanics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. The forces, which do not meet at one point, but their lines of action lie on the same plane, are known as coplaner non-concurrent forces.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 5. The total motion possessed by a body, is called

    • Options
    • A. impulsive force
    • B. mass
    • C. weight
    • D. momentum
      • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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

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