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A small coin of mass 5 g is placed at a ...

A small coin of mass 5 g is placed at a distance 5 cm from centre on a flat horizontal turn table. The turn table is observed to make 3 revolutions in `sqrt(10)s`. The frictional force on the coin is `(n xx 10^(-3)) N`. Find value of `n`.

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A small coin is placed on a flat, horizontal turbtable. The turnable is observed to make three revolutions is 3.14 s. (a) What is the speed of the coin when it rides without slipping at a distance of 5.0 cm from the center of the turntable? (b) What is the acceleration (magnitude and direction) of the coin? (c) What are the magnitude and direction of the frictional force acting on the coi if the coin has a mass of 2.0 g? (d) What is the coefficient of static friction between the coin and the turntable if the coin is observed to slide off the turntable when it is more than 10 cm from the center of the turntable?

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Knowledge Check

  • A small coin is placed on a flat horizontal turn table. The turn table is observed to make three revolutions in 3.14 sec. What is the coefficient of static friction between the coin and turn table if the coin is observed to slide off the turn table when it is greater than 10cm from the centre of turn table

    A
    0.4
    B
    0.36
    C
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    D
    0.004

  • A small coin is placed on a flat horizontal turn table. The turn table is observed to make three revolutions in 3.14 sec . What is the coefficient of static friction between the coin and turn table if the coin is observed to slide off the turn table when it is greater than 10cm from the centre of turn table .

    A
    `0.4`
    B
    `0.36`
    C
    `4`
    D
    `0.004`

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    9 cm
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    D
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