STANDARD Physics Angular Acceleration MCQ Question
The angular speed of a motor wheel is increased from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration of the motor wheel is
2π rad s⁻²
4π rad s⁻²
6π rad s⁻²
8π rad s⁻²
Correct Answer
Detailed Explanation
The initial angular speed is 40π rad s⁻¹ and the final angular speed is 104π rad s⁻¹. The angular acceleration is calculated using α = (ω - ω₀) / t = (104π - 40π) / 16 = 4π rad s⁻².
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