A body is rotating in a horizontal circle of radius 2.5m with an angular speed...

WAEC 2006

A body is rotating in a horizontal circle of radius 2.5m with an angular speed of 5 rad s^-1. Calculate the magnitude of the radial acceleration of the body

A. 62.50ms^-2
B. 31.25ms^-2
C. 12.50ms^-2
D. 10.00ms^-2

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Correct Answer: Option C

Explanation

\(\alpha = \frac{W_2 - W_1}{t} = \frac{5}{1} = 5 rad\)/s²

9 = \(\alpha\)r

= 5 x 2.5 = 12.50m\s²

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A body is rotating in a horizontal circle of radius 2.5m with an angular speed...

Correct Answer: Option C

Explanation

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