Angular Acceleration of Flywheel (2022)

The angular speed of a fly wheel moving with uniform angular acceleration changes from $1200\text{ rpm}$ to $3120\text{ rpm}$ in $16\text{ seconds}$. The angular acceleration in $\text{rad/s}^2$ is:

(2022)

$104\pi$

$2\pi$

$4\pi$

$12\pi$

Solution:

Concept: Definition of angular acceleration. Formula: $\alpha = \frac{\omega_2 - \omega_1}{t}$. Solution: Converting rpm to rad/s and substituting values gives $\alpha = 4\pi\text{ rad/s}^2$.

Angular Acceleration of Flywheel (2022)

Solution:

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