A wheel increases angular speed from 360 revolutions per minute to 1200 revolutions per minute in 14 s. Find its angular acceleration.
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Question

A wheel increases angular speed from 360 revolutions per minute to 1200 revolutions per minute in 14 s. Find its angular acceleration.

G1 Physics · Accepted Answer

Step 1: ω₁=360×2π/60=12π rad/s, ω₂=1200×2π/60=40π rad/s. Step 2: Thus α=(40π−12π)/14=2π rad/s². Final answer: A — 2π rad/s².