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  • Question

  • Coefficient of friction depends upon


  • Options
  • A. area of contact only
  • B. nature of surface only
  • C. both (a) and (b)
  • D. none of these

  • Correct Answer
  • nature of surface only 

    • Engineering Mechanics problems

    Search Results

    • 1. The unit of angular velocity is

    • Options
    • A. m/min
    • B. rad/s
    • C. revolutions/min
    • D. both (B) and (C)
    • E. none of these
      • Discuss
    • 2. In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively

    • Options
    • A. (tensile) and 2W (compressive)
    • B. 2W(tensile) and (compressive)
    • C. (tensile) and (compressive)
    • D. none of the above
      • Discuss
    • 3. The acceleration of a particle moving with simple harmonic motion is proportional to the displacement of the particle from the mean position.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. The unit of moment of inertia of an area is

    • Options
    • A. kg-m2
    • B. kg-m-s2
    • C. kg/m2
    • D. m4
      • Discuss
    • 5. A force while acting on a body may

    • Options
    • A. change its motion
    • B. balance the forces, already acting on it
    • C. give rise to the internal stresses in it
    • D. all of these
      • Discuss
    • 6. A force acting in the opposite direction to the motion of the body is called force of friction.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 7. For any system of coplaner forces, the condition of equilibrium is that the

    • Options
    • A. algebraic sum of the horizontal components of all the forces should be zero
    • B. algebraic sum of the vertical components of all the forces should be zero
    • C. algebraic sum of moments of all the forces about any point should be zero
    • D. all of the above
      • Discuss
    • 8. The velocity ratio of a single purchase crab winch can be increased by

    • Options
    • A. increasing the length of the handle
    • B. increasing the radius of the load drum
    • C. increasing the number of teeth of the pinion
    • D. all of the above
      • Discuss
    • 9. A science teacher claimed that Newton's third law of motion is involved while studying the motion of rockets. His statement is

    • Options
    • A. justified
    • B. not justified
      • Discuss
    • 10. The maximum displacement of a body, from its mean position is called amplitude.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss

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