Find amplitude with SHM (Simple Harmonic Motion)

[kamiquazi]

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

 

[kuruman]

What is the definition of amplitude?

 

[kamiquazi]

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]

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?

 

[AakashR]

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]

You got it.

 

[kamiquazi]

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!