For uniform angular acceleration we can write,
ω=ω0+αt⇒α=tω−ω0
Given, ω=3120rpm=603120×2π=104πrads−1
and ω0=1200rpm=601200×2π=40πrads−1
Therefore, α=16104πrads−1−40πrads−1=4πrads−2
The angular speed of a fly wheel moving with uniform angular acceleration changes from 1200rpm to 3120rpm in 16 seconds. The angular acceleration in rads−2 is:
Held on 30 Apr 2022 · Verified 9 Jul 2026.
4π
12π
104π
2π
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