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Find amplitude with SHM (Simple Harmonic Motion)

  • Thread starter kamiquazi
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1. Homework Statement
It is a three part question in which I have successfully answered the first two of the questions.
Part. 1
A weight suspended from a spring is seen to bob up and down over a distance of 10 cm twice each second.
What is the frequency? 2 Hz is the correct answer.
Answer in the units of Hz.

Part. 2
What is the period?
Answe in the units of s. 0.5 s is the correct answer.

Part. 3
What is the amplitude?
Answer in the units of cm.

2. Homework Equations



3. The Attempt at a Solution
 

kuruman

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What is the definition of amplitude?
 
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What is the definition of amplitude?
Quoted from Wikipedia, "Amplitude is the magnitude of change in the oscillating variable, with each oscillation, within an oscillating system. "

Outside of that I do not have a single clue as the instructor has not mentioned amplitude.
 

kuruman

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A weight suspended from a spring is seen to bob up and down over a distance of 10 cm twice each second.
I suggest that you go back to wikipedia and read about peak-to-peak amplitude. Is the 10 cm you are given the amplitude or the peak-to-peak amplitude?
 
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If the total distance covered by the weight while bobbing up and down is 10cm then magnitude of the amplitude is half the total distance that is 5cm.
 

kuruman

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You got it.
 
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I suggest that you go back to wikipedia and read about peak-to-peak amplitude. Is the 10 cm you are given the amplitude or the peak-to-peak amplitude?
After rereading what I quoted from Wikipedia and reread the article I did complete the final problem. I want to thank you for your help!
 

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