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Can an object be in pure translation as ...

Can an object be in pure translation as well as in pure rotation?

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A : The work done by friction on an object during pure rolling motion is zero. R : In pure rolling motion, there is relative motion at the point of contact.

Assertion: A ball is released on a rough ground in the condition shown in figure. it will start pure rolling after some time towards left side. Reason: Friction will convert the pure rotational motion of the ball into pure rolling

Knowledge Check

  • A couple produces: a) purely translational motion b) purely rotational motion c) both translational and rotational motion d) no motion

    A
    purely translational motion
    B
    purely rotational motion
    C
    both translational and rotational motion
    D
    no motion

  • Assertion: A rigid body not fixed in some way can have either pure translation or a combination of translation and rotation. Reason: In rotation about a fixed axis, every particle of the rigid body moves in a circle which lies in a plane perpendicular to the axis and has its centre on the axis.

    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.

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    The axis of rotation of a purely rotating body

    At any instant, a rolling body may be considered to be in pure rotation about an axis through the point of contact. This axis is translating forward with speed

    A ring is kept on a rough inclined surface. But the coefficient of friction is less than the minimum value required for pure rolling. At any instant of time let K_(T) and K_(R) be the translational and rotational kinetic energies of the ring, then

    A sphere of mass M and radius r shown in figure slips on a rough horizontal plane. At some instant it has translational velocity V_(0) and rotational velocity about the centre (v_(0))/(2r) . Find the translational velocity after the sphere starts pure rolling. .

    Two pure inductors each of self-inductance L are connected in parallel but are well separted from each other. The total inductance is

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