Find amplitude with SHM (Simple Harmonic Motion)

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Homework Help Overview

The discussion revolves around a three-part question related to Simple Harmonic Motion (SHM), specifically focusing on the calculation of amplitude after determining frequency and period from a scenario involving a weight suspended from a spring. The original poster has successfully answered the first two parts of the question.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the definition of amplitude and question whether the provided distance of 10 cm refers to amplitude or peak-to-peak amplitude. There is an exploration of how to interpret the total distance covered by the weight in relation to amplitude.

Discussion Status

Some participants have provided guidance on interpreting the problem, particularly regarding the distinction between amplitude and peak-to-peak amplitude. The original poster expresses gratitude for the assistance received, indicating some level of productive engagement in the discussion.

Contextual Notes

There is mention of the instructor not having covered amplitude, which may contribute to the uncertainty in understanding the concept. The problem involves interpreting given values in the context of SHM.

kamiquazi
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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.

Homework Equations





The Attempt at a Solution

 
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What is the definition of amplitude?
 
kuruman said:
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.
 
kamiquazi said:
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?
 
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.
 
You got it.
 
kuruman said:
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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