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  • Question

  • The angular velocity (in rad / s) of a body rotating at N revolutions per minute is


  • Options
  • A. ?N/60
  • B. ?N/180
  • C. 2?N/60
  • D. 2?N/180

  • Correct Answer
  • 2?N/60 

    • Engineering Mechanics problems

    Search Results

    • 1. The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

    • Options
    • A. same at every point on its line of action
    • B. different at different points on its line of action
    • C. minimum, if it acts at the centre of gravity of the body
    • D. maximum, if it acts at the centre of gravity of the body
      • Discuss
    • 2. The maximum efficiency of a lifting machine is

    • Options
    • A. 1/m
    • B. V.R./m
    • C. m/V.R.
    • D. 1/(m x V.R.)
      • Discuss
    • 3. A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

    • Options
    • A. m1/m2
    • B. m1.g sin ?
    • C. m1.m2/m1+m2
    • D.
      • Discuss
    • 4. The point, through which the whole weight of the body acts, irrespective of its position, is known as

    • Options
    • A. moment of inertia
    • B. centre of gravity
    • C. centre of percussion
    • D. centre of mass
      • Discuss
    • 5. Which of the following statement is correct?

    • Options
    • A. The kinetic energy of a body during impact remains constant.
    • B. The kinetic energy of a body before impact is equal to the kinetic energy of a body after impact.
    • C. The kinetic energy of a body before impact is less than the kinetic energy of a body after impact.
    • D. The kinetic energy of a body before impact is more than the kinetic energy of a body after impact.
      • Discuss
    • 6. The process of finding out the resultant force is called __________ of forces.

    • Options
    • A. composition
    • B. resolution
      • Discuss
    • 7. In a framed structure, as shown in the below figure, the force in the member BC is

    • Options
    • A. W/3 (compression)
    • B. W/3 (tension)
    • C. 2W/3 (compression)
    • D. 2W/3 (tension)
      • Discuss
    • 8. The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

    • Options
    • A. less than
    • B. greater than
      • Discuss
    • 9. The motion of a particle round a fixed axis is

    • Options
    • A. translatory
    • B. rotary
    • C. circular
    • D. translatory as well as rotatry
      • Discuss
    • 10. The minimum force required to slide a body of weight W on a rough horizontal plane is

    • Options
    • A. W sin ?
    • B. W cos ?
    • C. W tan ?
    • D. none of these
      • Discuss

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