http://prntscr.com/m8imy5

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

Guest Jan 17, 2019

#1**+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

CPhill Jan 17, 2019