Question

A starter motor rotates a flywheel from rest to 200 rev/min in 2.5 s with uniform acceleration . Determine angular acceleration in rads/s2

Answer 1

Answer on Question #53382 - Physics - Kinematics - Dynamics

$$\omega_ {0} = 0; \quad \omega_ {1} = 200 \frac {rev}{min} \approx 2 \pi * 3.33 \frac {rad}{s}; \quad \Delta t = 2.5 \, s.$$ $$\boldsymbol {\beta} = \frac {\Delta \omega}{\Delta t} = \frac {\omega_ {1} - \omega_ {0}}{\Delta t} = 8.36 \frac {rad}{s ^ {2}}.$$

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