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JAMB Physics 2024 Paper

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Question : 57

Total: 125

A body is whirled in a horizontal circle at the rate of 800 revolutions per minute. Determine the angular velocity

100 $\pi$ rads $^{-1}$
33.3 $\pi$ rads $^{-1}$
29.5 $\pi$ rads $^{-1}$
26.7 $\pi$ rads $^{-1}$

Solution:

Angular velocity( $\omega$ ) = 2 $\pi$ x rev per sec

Rev. per sec = $\; \frac{800}{60}$ $\approxeq$ 13.33 rev/s

Angular velocity( $\omega$ ) = 2 $\pi$ x 13.33 $\approxeq$ 26.7 $\pi$ rad/s

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