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Mechanical Engineering :: Engineering Mechanics

  1. The radius of gyration is the distance where the whole mass (or area) of a body is assumed to be concentrated.

  2. A.

    Correct

    B.

    Incorrect


  3. If three coplaner forces acting on a point are in equilibrium, then each force is proportional to the sine, of the angle between the other two.

  4. A.

    Correct

    B.

    Incorrect


  5. A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

  6. A.

    1m

    B.

    2m

    C.

    3m

    D.

    4m


  7.  In the shown figure, the tension (T) in the string will be

  8. A.

    \(\frac { m_1.m_2.g} { m_1 + m_2}\)

    B.

    \(\frac { 2m_1.m_2.g} { m_1 + m_2}\)

    C.

    \(\frac { m_1 + m_2} { m_1.m_2.g} \)

    D.

    \(\frac { m_1 + m_2} { m_1.m_2.g} \)


  9. When the spring of a watch is wound, it will possess

  10. A.

    strain energy

    B.

    kinetic energy

    C.

    heat energy

    D.

    electrical energy