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Mechanical Engineering :: Engineering Mechanics

  1. The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

  2. A.

    equal to

    B.

    less than

    C.

    greater than

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

  4. A.

    increase

    B.

    decrease

    C.
    remain the same

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  5. The total time taken by a projectile to reach maximum height and to return back to the ground, is known as time of flight.

  6. A.

    Yes

    B.

    No

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  7. The frequency of oscillation of a torsional pendulum is

  8. A.

    \( \frac { 2nk } { r } \sqrt \frac{ g }{ l }\)

    B.

    \( \frac { r} { 2nk } \sqrt \frac{ l }{ g }\)

    C.

    \( \frac { 2nr } { k } \sqrt \frac{ g }{ l }\)

    D.

    \( \frac { r } { 2nk } \sqrt \frac{ g }{ l }\)

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  9. The range of a projectile is maximum, when the angle of projection is

  10. A.

    30°

    B.

    45°

    C.

    60°

    D.

    90°

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