How many revolutions does it rotate before coming to rest
2 Answers

ωf = ωi + at
t = (ωf – ωi)/a = (020)/5 = 4s
θ = ωt + 0.5at^2
θ = (20*4) + (0.5 * 5 * 4^2)
= 80 + (40)
= 40 radians
2π rad = 1 rev
40 rad = 40/2π rev = 6.36 rev.
So the ferris wheel will have 6.36 rev.

w(1)=20 w(2)=0 a=50 0^220^2=2(50)x x=4 revolutions