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this question is from dynamics.Screen Shot 2019-10-14 at 18.13.49.png

Screen Shot 2019-10-14 at 18.13.49.png

Chapter 5, Problem 5/010 (detailed solution and video solution to similar problem attached) The angular acceleration of a body which is rotating about a fixed axis is given by a = -kw2, where the constant k = 0.18 (no units). Determine the angular displacement
and time elapsed when the angular velocity has been reduced to 1/8 times its initial value (so = 11.5 rad/s. The initial rotation angle is 90 = 0. Answers:
a = rad
t = s

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