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Mechanical Engineering :: Engineering Mechanics

  1. According to principle of conservation of energy, the total momentum of a system of masses in any direction remains constant unless acted upon by an external force in that direction.

  2. A.

    True

    B.

    False

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  3. The friction experienced by a body, when in motion, is known as

  4. A.

    rolling friction

    B.

    dynamic friction

    C.

    limiting friction

    D.

    static friction

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  5. Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the ball with velocity v is made to struck the second ball. Both the balls after impact will move with a velocity

  6. A.

    v

    B.

    v/2

    C.

    v/4

    D.

    v/8

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  7. The term 'force' may be defined as an agent which produces or tends to produce, destroys or tends to destroy motion.

  8. A.

    Agree

    B.

    Disagree

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  9. The coefficient of restitution for elastic bodies is one.

  10. A.

    Correct

    B.

    Incorrect

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