Answer:
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Explanation:
:Answer:
a. the initial angular velocity = 166.5rad/s
b. t= 135.7seconds
Explanation:
a. v = rw
angular velocity for 2870 rev, w = (2πN)/60 =2*3.142*2870rev)/60 =300.5rad/sec
w₁-w₂ = 300.5 - 133= 166.5rad/s
the initial angular velocity = 166.5rad/s
acceleration = change in velocity / time
b. 1 revolution = 2π
1 rad = 0.159rev
? = 2870 rev
=2870*1)/0.159 = 18050.3rad
the final angular speed = rev/time = rad/time
133 rad/s = 18050.3/t
133t = 18050.3
t= 135.7seconds
