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A block is placed on a horizontal table ...

A block is placed on a horizontal table which can rotate about its axis.The block is placed at certain distance from centre as shown in figure. Table rotates such that particle does not slide. See possible direction of net acceleration of block at the instant shown in figure

`{:(,"Column-I","Column-II"),(,(A)"When rotation is clockwise with constant "omega,(P)1),(,(B)"When rotation is clock wise with decreasing "omega,(Q)2),(,(C)"When rotation is clockwise with increasing "omega,(R)3),(,(D)"Just after clockwise rotation beings from rest",(S)4):}`

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The correct Answer is:
A, B, C, D
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Knowledge Check

  • A small objective placed on a rotating horizontal turn table just slips when it is placed at a distance 4cm from the axis of rotation. If the angular velocity of the trun-table doubled, the objective slip when its distance from the axis of ratation is.

    A
    1cm
    B
    2cm
    C
    4cm
    D
    8cm

  • A solid cylinder of mass M and radius R rotates about its axis with angular speed omega . Its rotational kinetic energy is

    A
    `1/2 MR^(2)omega^(2)`
    B
    `MR^(2)omega^(2)`
    C
    `1/4 MR^(2)omega^(2)`
    D
    `1/8 MR^(2)omega^(2)`

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