John K.

asked • 06/19/19

Ferris wheel r=20m -full rev 90 secs .Assume height at bottom is 0m.

I found height by = h=-20 cos{Pi/45(t)} +20

Need to create equation for vertical distance from origin using t (time) h (height) as variable?

Can you help?

1 Expert Answer

By:

Sam Z. answered • 06/20/19

Tutor
4.3 (12)

Math/Science Tutor

John K.

we have the height for all the t using h= -20cos{Pi/45(t) +20 We need a new equation for vertical distance from origin using t and h already found.
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06/21/19

Sam Z.

As for height I'm working with trig. rad=20; this is the hypotenuse (side c). Side "a" is the height. Side "b" is horizontal. You want side "a". The formula we'll use is c^2-b^2=a^2. To get "a" we need a/sin(alpha)=c. By using 30 for "a"; I got a/sin30=20; a=10. 1 sec=4deg. 30/4=7.5sec
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06/21/19

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