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Mechanical Engineering :: Engineering Mechanics

Engineering Mechanics - Section 1
Engineering Mechanics - Section 2
Engineering Mechanics - Section 3
Engineering Mechanics - Section 4
Engineering Mechanics - Section 5
Engineering Mechanics - Section 6
Engineering Mechanics - Section 7

  1. The time of flight (t) of a projectile on a horizontal plane is given by

    2. A.

    t = \(\frac { 2u sin\alpha } { g }\)
    B.

    t = \(\frac { 2u cos\alpha } { g }\)
    C.

    t = \(\frac { 2u tan\alpha } { g }\)
    D.

    t = \(\frac { 2u } { g sin\alpha }\)

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  2. The velocity ratio for the third system of pulleys is

    3. A.

    n
    B.

    n2
    C.

    2n
    D.

    2n - 1

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  3. If the gravitational acceleration at any place is doubled, then the weight of a body will be

    4. A.

    g/2
    B.

    g
    C.

    \(\sqrt2g\)
    D.

    2g

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  4. The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

    5. A.

    mr2/3
    B.

    2mr2/3
    C.

    2mr2/5
    D.

    3mr2/5

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  5. The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by

    6. A.

    P + Q
    B.

    P - Q
    C.

    P / Q
    D.

    Q / P

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