A wheel of diameter 0.3 m is rotating with an angular velocity of 3 rad/s and slowing under a constant acceleration of -3 rad/s2. Calculate everything possible about the motion, starting with, say, its angular velocity after 0.4 s.
w = wo+alfa*t
after t = 0.4
w = 3 - (3*0.4*0.4) = 2.52 rad/s <-answer
angular displacement = theta = wo*t + 0.5*alfa*t^2
theta = 3*0.4 -0.5*3*0.4*0.4 = 0.96 radians <-answer
wf = 0
0 = 3 - 0.3*T
T = 10 s
after T = 10 s thet wheel stops
total displacement = 3*10-0.5*0.3*10*10 = 15 radians =
2.4 revolutions
A wheel of diameter 0.3 m is rotating with an angular velocity of 3 rad/s and...
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