Steven N.

asked • 10/19/22

Can't get the right seconds

A ferris wheel is 35 meters in diameter and boarded from a platform that is 2 meters above the ground. The 6 o'clock position on the wheel is level with the loading platform. The wheel completes a full revolution in 6 minutes. How many minutes of the ride are spent higher than 32 meters above the ground (to the nearest second)?


I used the following formula and it didn't work:


-17.5cos(pi/3(t))+19.5

Doug C.

tutor
Try using cos((pi/180)t) , converting 6 minutes to 360 seconds
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10/19/22

1 Expert Answer

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Richard C. answered • 10/19/22

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19.5 is supposed to be 2. The vertical shift is up 2 to correct for the platform.

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Steven N.

So the formula with your correction is the correct way to solve this? Trying to help my daughter, and it's been years since I did this. She is putting the solution in an online assignment from her class and it says the 1 minute is correct but the seconds is incorrect
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10/23/22

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