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  • Question

  • One joule means that


  • Options
  • A. work is done by a force of 1 N when it displaces a body through 1m
  • B. work is done by a force of 1 kg when it displaces a body through 1 m
  • C. work is done by a force of 1 dyne when it displaces a body through 1 cm
  • D. work is done by a force of 1 g when it displaces a body through 1 cm

  • Correct Answer
  • work is done by a force of 1 N when it displaces a body through 1m 

    • Engineering Mechanics problems

    Search Results

    • 1. The centre of gravity of a triangle lies at a point where its medians intersect each other.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Moment of inertia of a hollow rectangular section as shown in the below figure about Y-Y axis, is not the same as that about X-X axis.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 3. If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys

    • Options
    • A. first
    • B. second
    • C. third
      • Discuss
    • 4. Vectors method for the resultant force is also called polygon law of forces.

    • Options
    • A. Correct
    • B. Incorrect
      • Discuss
    • 5. A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is

    • Options
    • A. v
    • B. 2v
    • C. 4v
    • D. 8v
      • Discuss
    • 6. When a train is rounding a curve, the side thrust on the wheel flanges is prevented by raising the outer edge of the rail.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 7. The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (?) is

    • Options
    • A. ?/2
    • B. 30° + ?/2
    • C. 45° + ?/2
    • D. 60° + ?/2
      • Discuss
    • 8. The force, by which the body is attracted, towards the centre of the earth, is called

    • Options
    • A. impulsive force
    • B. mass
    • C. weight
    • D. momentum
      • Discuss
    • 9. The velocity ratio for the second system of pulleys is n.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Efficiency of a screw jack is given by(where ? = Helix angle, and ? = Angle of friction.)

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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