A fan blade speeds up uniformly from to in

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A fan blade speeds up uniformly from  12 rad s−1\,12\,\text{rad}\,\text{s}^{-1} to  20 rad s−1\,20\,\text{rad}\,\text{s}^{-1} in 2.0 s2.0\,\text{s}. Determine the blade’s average angular acceleration.

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