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What is a second's pendulum?...

What is a second's pendulum?

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A pendulum which has a time period of two seconds is called a second's pendulum.
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What is a seconds pendulum? What is its approximate length?

What is second's pendulum ? Find the length of second's pendulum for g = 9.8 m//s^(2) ? Also write expressions for the time period if the second's pendulum is an a carriage which is accelerating (a) upwards (b) downwards (c ) horizontally. Also, fin the value of time period of it if is made to oscillate a freely falling lift.

Knowledge Check

  • The mass and diameter of a planet are twice those of earth. What will be the period of oscillation of a pendulum on this plenet. If is a second's pendulum on earth?

    A
    `sqrt(2)s`
    B
    `2sqrt(2)s`
    C
    `(1)/sqrt(2)s`
    D
    `(1)/(2sqrt(2))s`

  • The pendulum of wall clock is a second's pendulum. The number of oscillations made by it in one day is

    A
    3600
    B
    21600
    C
    43200
    D
    86400

  • At a particular place, a simple pendulum of length 1m, makes 400 oscillations in 13 minute. What is the length of a second's pendulum at this place ?

    A
    98 cm
    B
    100 cm
    C
    102 cm
    D
    105 cm

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    The length of a second's pendulum on the surface of earth is 1 m. What will be the length of a second's pendulum on the moon?

    The periodic time of a second's pendulum as seen by an astronaut in a spaceship is

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