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A pendulum is suspended by a string of l...

A pendulum is suspended by a string of length 250 cm. The mass of the bob of the pendulum is 200 g. The bob is pulled aside until the string is at 60° with vertical as shown in the figure. After releasing the bob, the maximum velocity attained by the bob will be ___`ms^(-1)`? (if g = 10 m/`s^2`)

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Knowledge Check

  • The bob of a pendulum has its rest point 1 m below the support. The bob is pulled aside until the string makes an angle of 60^@ with the vertical line. On release with what speed does the bob swing pass its rest point?

    A
    `3.2m//s`
    B
    `4m//s`
    C
    `2m//s`
    D
    `5m//s`

  • A 1N pendulum bob is held at an angle theta from the vertical by a 2 N horizontal force F as shown in the figure. The tension in the string supporting the pendulum bob (in newton) is

    A
    `cos theta`
    B
    `(2)/(cos theta)`
    C
    `sqrt5`
    D
    1

  • A pendulum bob has a speed of 3ms^(-1) at its lowest position. The pendulum is 0.5 m long. The speed of the bob, when string makes an angle of 60^(@) to the vertical is ("take, g"=10ms^(-1))

    A
    `2ms^(-1)`
    B
    `(1)/(2)ms^(-1)`
    C
    `1 ms^(-1)`
    D
    `2.5ms^(-1)`