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Asked in NEET 2022 · Equations of rotational motion
Given: N₁=1200 rpm, N₂=3120 rpm, t=16 s, uniform α.
Idea: convert both speeds to rad s⁻¹, then α=(ω₂-ω₁)/t.
ω₁=1200×(2π)/(60)=40π rad s⁻¹
ω₂=3120×(2π)/(60)=104π rad s⁻¹
α=(104π-40π)/(16)=(64π)/(16)
α=4π rad s⁻².
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