A rotating wheel changes angular speed from 1800 rpm to 3000 rpm in 20 s. What is the angular acceleration assuming it is uniform?

Question

$60 \pi \, \text{rad/s}^2$

$90 \pi \, \text{rad/s}^2$

$2 \pi \, \text{rad/s}^2$

$40 \pi \, \text{rad/s}^2$

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