w0 = 4.8 rad/s
theta = (3.6)(2pi) = 22.62 rad
wf = 0
Applying wf^2 - w0^2 = 2 alpha theta
0^2 - 4.8^2 = 2(alpha)(22.62)
alpha = - 0.5093 rad/s^2
wf = w0 + alpha t
0 = 4.8 - 0.5093 t
t = 9.4 sec .............Ans
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