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A body is rotating in a horizontal circle of radius 2.5m wit...

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

View answer & explanation

Correct answer is C

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

9 = \(\alpha\)r

= 5 x 2.5 = 12.50m\s²

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