Calculate the period (T) of uniform circular motion if the velocity is 40.0 m/s and centripetal acceleration is 20.0 m/s2.
1 answer:
T is the time for a whole round. centripetal acceleration = V^2/R, 20 = 40^2 / R, find R = 40^2/20 = 40*40/20 = 80 m, right? Now, one round is L = 2*pi*R = 2*pi*80 = 160*pi And T = L/v (distance/speed) = 160*pi/40 = 4*pi seconds, or ~ 12.57 s
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