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Standard X

Physics

Multiple Movable Pulley

Remains stati...

Question

Remains stationary if there is no friction between the paper and the ball.Moves to the left and stars rolling backwards, $i, e$ to the left if there is a friction between the paper and the ball.Moves forward, $i . e .$ , in the direction in which the paper is pulled.Here, the correct statements is/are

I

and

I I

only

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I I I

only

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I

only

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I I

only

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Solution

The correct options are
A $I$ and $I I$ only
C $I$ only

$OPTION A is correct$

$\Rightarrow If friction is absent between paper$

$and ball, No force act on the ball$

$Hence it will remain stationary.$

$\Rightarrow$ When paper is pulled towards right,

friction on ball will also act towards

right which makes the ball revolve

in backward direction 20 the ball

rolls backward

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Question 4

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Remains stationary if there is no friction between the paper and the ball.Moves to the left and stars rolling backwards,i,e to the left if there is a friction between the paper and the ball.Moves forward, i.e., in the direction in which the paper is pulled.Here, the correct statements is/are