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http://prntscr.com/m8imy5

 

i know how to find the period i just don't know how to estimate in this graph 

 Jan 17, 2019
 #1
avatar+102372 
+1

Look at the time between 4 and 6 seconds

 

Note that the Ferris wheel rises to its max height and falls back to its minimum height 3 times during his interval

 

So.....each complete cycle takes 2/3 min   =  period

 

This means that it takes 2/3 min = 40 sec to make 1 complete revolution

 

 

cool cool cool 

 Jan 17, 2019
 #2
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thank you uuuuu

 Jan 17, 2019

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