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  • Question

  • If a body is thrown upwards, then the gravitational acceleration is taken as zero.


  • Options
  • A. Correct
  • B. Incorrect

  • Correct Answer
  • Incorrect 

    • Engineering Mechanics problems

    Search Results

    • 1. If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The maximum mechanical advantage of a lifting machine is

    • Options
    • A. 1 + m
    • B. 1 - m
    • C. 1 / m
    • D. m
      • Discuss
    • 3. When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ proportional to its acceleration.

    • Options
    • A. directly
    • B. inversely
      • Discuss
    • 4. Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is

    • Options
    • A. 20 N
    • B. 40 N
    • C. 80 N
    • D. none of these
      • Discuss
    • 5. When a body falls freely under gravitational force, it possesses __________ weight.

    • Options
    • A. no
    • B. minimum
    • C. maximum
      • Discuss
    • 6. The energy possessed by a body, for doing work by virtue of its position, is called

    • Options
    • A. potential energy
    • B. kinetic energy
    • C. electrical energy
    • D. chemical energy
      • Discuss
    • 7. If P is the force acting on the body, m is the mass of the body and a is the acceleration of the body, then according to Newton's second law of motion,

    • Options
    • A. P + m.a = 0
    • B. P - m.a = 0
    • C. P x m.a = 0
    • D. P/m.a = 0
      • Discuss
    • 8. Which of the following statement is incorrect?

    • Options
    • A. A force acting in the opposite direction to the motion of the body is called force of friction.
    • B. The ratio of the limiting friction to the normal reaction is called coefficient of friction.
    • C. A machine whose efficiency is 100% is known as an ideal machine.
    • D. The velocity ratio of a machine is the ratio of load lifted to the effort applied.
      • Discuss
    • 9. The potential energy stored by a spring in compression, is called strain energy.

    • Options
    • A. Yes
    • B. No
      • Discuss
    • 10. In a framed structure, as shown in the below figure, the force in the member AB is __________ the force in member AC.

    • Options
    • A. half
    • B. equal to
    • C. double
      • Discuss

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