Any help would be much appreciated.
A ferris wheel has a diameter of 70 feet and rotates clockwise. You get on the wheel at the bottom (at t=0) where the car is 10 feet from the ground.
1) Fine the equation of motion if it takes 90 seconds to complete one revolution.
2) Find your height from the ground after 35 seconds.
3) At what time is the wheel 30 feet high?

Question

Any help would be much appreciated.
A ferris wheel has a diameter of 70 feet and rotates clockwise. You get on the wheel at the bottom (at t=0) where the car is 10 feet from the ground. 
1) Fine the equation of motion if it takes 90 seconds to complete one revolution.
2) Find your height from the ground after 35 seconds.
3) At what time is the wheel 30 feet high?

anonymous · Answer

so you know its a cosine function because it starts from minimum

anonymous · Answer

Is it a negative cosine function?

anonymous · Answer

a cosine function usually starts from a maximum, so its shifted over

anonymous · Answer

and you know that the period is 90s

anonymous · Answer

acosk(t-b)+c
c= +10 because its 10 feet from ground

anonymous · Answer

p= 2pi/k, p= 90 seconds

anonymous · Answer

you need to find out how much it shifts from a normal cosine function (t-b) , and the "a"

anonymous · Answer

Can you show me briefly how the graph looks?

anonymous · Answer

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