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JAMB Physics 2024 Paper

Question : 57

Total: 125

Solution:

Concept:

Angular velocity is found by multiplying the frequency of rotation by

2\pi

For circular motion,

\omega = 2\pi f

, where

f

is revolutions per second.

Explanation:

The body rotates at 800 revolutions per minute.

Convert this to revolutions per second:

f = \frac{800}{60} = 13.33 \, \text{rev/s}

Now substitute into the formula for angular velocity:

\omega = 2\pi \times 13.33

\omega = 26.7\pi \, \text{rad/s}

So the angular velocity is

26.7\pi \, \text{rad s}^{-1}

Answer:

Option D:

26.7\pi \, \text{rad s}^{-1}

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