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The direction of the angular velocity ve...

The direction of the angular velocity vector is along

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The correct Answer is:
(A)-q (B)-p (C)-r (D)-v (E)-s (F)-t, u
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Knowledge Check

  • Assertion: If the head of a right handed screw rotates with the body, the screw advances in the direction of the angular velocty. Reason: For rotation about a fixed axis, the angular velocity vector lies along the axis of rotation.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • The linear velocity of rotating body is given by vecv = vecomega xx vecr where vecomega is the angular velocity and vecr is the radius vector. The angular velocity of body vecomega = hati - 2hatj + 2hatk and this radius vector vecr = 4hatj - 3hatk , then |vecv| is

    A
    `sqrt(29)` units
    B
    `sqrt(31)` units
    C
    `sqrt(37)` units
    D
    `sqrt(41)` units

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    Assertion : Acceleration of a moving particle can change its direction without any change in direction of velocity. Reason : If the direction of change in velocity vector changes, the direction of acceleration vector also changes.

    Assertion : Acceleration of a moving particle can change its direction without any change in direction of velocity. Reason : If the direction of change in velocity vector changes, the direction of acceleration vector also changes.

    A body is executing circular motion in the vertical plane containing directions. If the direction of velocity (oversetrightarrow(v)) at the top most point is towards west, what is the direction of angular velocity (oversetrightarrow(omega))?

    (A): The direction of velocity vector remains unchanged though the coordinate system is changed (R) : The direction of real vector is independent of coordinate system

    A particle is moving with constant speed v along x - axis in positive direction. Find the angular velocity of the particle about the point (0, b), when position of the particle is (a, 0).

    The dimensional formula for angular velocity is

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