A weight suspended from a spring is seen to bob up and down over a distance of 20 cm triply each second. What is the period? What is the amplitude?

The period and the amplitude of the weight suspended from spring are 0.33 seconds and 10 centimeters, respectively.

1) The period is given by:

Where:

f: is the frequency = 3 bob up and down each second = 3 s⁻¹ = 3 Hz

Hence, the period is 0.33 s.

2) The amplitude is the distance between the equilibrium position and the maximum position traveled by the spring. Since the spring is moving up and down over a distance of 20 cm, then the amplitude is:          

Therefore, the amplitude is 10 cm.          

You can learn more about the period and amplitude here:

I hope it helps you!                    

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