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Mechanical Engineering :: Engineering Mechanics

  1. A resultant force is a single force which produces the same effect as produced by all the given forces acting on a body.

  2. A.

    True

    B.

    False

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  3. 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

  4. A.

    simple pendulum

    B.

    compound pendulum

    C.

    torsional pendulum

    D.

    second's pendulum

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  5. Moment of inertia of a hollow circular section, as shown in the below figure about X-axis, is

  6. A.

    \(\frac { n } { 16 } (D^2 - d^2)\)

    B.

    \(\frac { n } { 16 } (D^3 - d^3)\)

    C.

    \(\frac { n } { 32 } (D^4 - d^4)\)

    D.

    \(\frac { n } { 64 } (D^4 - d^4)\)

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  7. If two blocks of equal mass are attached to the two ends of a light string and one of the blocks is placed over a smooth horizontal plane while the other is hung freely after passing over a smooth pulley, then the two blocks will have some motion.

  8. A.

    Agree

    B.

    Disagree

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  9. During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

  10. A.

    equal to

    B.

    equal and opposite to

    C.

    less than

    D.

    greater than

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