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  • Question

  • The mechanical advantage of a lifting machine is the ratio of


  • Options
  • A. distance moved by effort to the distance moved by load
  • B. load lifted to the effort applied
  • C. output to the input
  • D. all of the above

  • Correct Answer
  • load lifted to the effort applied 

    • Engineering Mechanics problems

    Search Results

    • 1. In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will

    • Options
    • A. increase
    • B. decrease
    • C. remain the same
      • Discuss
    • 2. According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. The friction experienced by a body, when in motion, is known as

    • Options
    • A. rolling friction
    • B. dynamic friction
    • C. limiting friction
    • D. static friction
      • Discuss
    • 4. Static friction is always __________ dynamic friction.

    • Options
    • A. equal to
    • B. less than
    • C. greater than
      • Discuss
    • 5. The term 'force' may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.

    • Options
    • A. Agree
    • B. Disagree
      • Discuss
    • 6. A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

    • Options
    • A. principle of independence of forces
    • B. principle of resolution of forces
    • C. principle of transmissibility of forces
    • D. none of these
      • Discuss
    • 8. Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity

    • Options
    • A. v
    • B. v/2
    • C. v/4
    • D. v/8
      • Discuss
    • 9. The angle between two forces when the resultant is maximum and minimum respectively are

    • Options
    • A. 0° and 180°
    • B. 180° and 0°
    • C. 90° and 180°
    • D. 90° and 0°
      • Discuss
    • 10. When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

    • Options
    • A. simple pendulum
    • B. compound pendulum
    • C. torsional pendulum
    • D. second's pendulum
      • Discuss

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