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25 June, 08:18

A weight suspended from a spring is seen to bob up and down over a total distance of 20 centimeters twice each second.

8. What is the frequency?

9. What is the period?

10. What is the amplitude?

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Answers (1)
  1. 25 June, 08:46
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    Answer

    8. 2 Hz

    9. 0.5 seconds

    10. 20 cm

    Explanation

    Q 8

    Frequency is the number of oscillation in a unit time. It is the rate at which something repeats itself in a second.

    In this case, the spring bob up and down 2 times per second.

    ∴ Frequency = 2 Hz

    Q 9

    Period is the time taken to complete one oscillation.

    2 oscillations takes 1 second

    1 oscillation = 1/2 seconds.

    ∴ Period = 0.5 seconds

    Q 10

    Amplitude is the the maximum displacement of the spring.

    In this case the spring bob up 20 cm. This is it's displacement.

    ∴ Amplitude = 20 cm
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