Answer to Question #20229 in Mechanics | Relativity for rksingh
f = wt-et^2/2
where f is number of revolutions, t is time, w is initialrotation speed and e is angular deceleration.
it is obvious that e = w/(1/12 of minute) = 14400minute^(-2)
f = 1200t-14400t^2/2, t=1/12 of minute = 5 sec.
f = 100-50 = 50 revolutions will be done.
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