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A cylinder rolls up an inclined plane, r...

A cylinder rolls up an inclined plane, reaches some height, and then rolls down (without slipping throughout these motions). The directions of the frictional force acting on the cylinder are.

A

Uptheincline whileascending anddown theincline while descending

B

Up the incline while ascending aswell asdescending.

C

Down theincline while ascending and up theinclinewhile descending.

D

Down the incline while ascending as well as descending.

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • A cylinder rolls up an inclined plane, reaches someheight and then rolls down (without slipping throught these motions). The direction of the frictional force acting on the cylinder are -

    A
    Up the incline while ascending and down the incline whilse descending
    B
    Up the incline while ascending as well as descending
    C
    down the incline while ascending and up the incline while descending
    D
    down the incline while ascending as well as descending

  • A cylinder rolls down two different inclined planes of the same height but of different inclinations

    A
    In both cases the speed and time of descent will be different
    B
    In both cases the speed and time of descent will be same
    C
    The speed will be different but time of descent will be same
    D
    The time of descent will be different but speed will be same

  • A drum of radius R and mass M, rolls down without slipping along an inclined plane of angle theta . The frictional force-

    A
    decreases the rotational and translational motion
    B
    dissipates energy as heat
    C
    decreases the rotational motion
    D
    converts translational energy to rotational energy

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