Question

the speed of body moving in circle of radius 15cm changes from 180 rev / min to 600rev / min in 11s.then angular acceleration will be

Answer 1

Answer:

0.63 rev /s^{2}

Explanation:

α  = Δ ω /Δt = (ω 2 - ω 1)/t

ω 1 = 180/60 = 3 rev/sec

ω 2 = 600/60 = 10 rev/sec

α  = (10-3)/11 = 0.63 rev /s^{2}