A body is rotating in a horizontal circle of radius 2.5m with an angular speed...
PHYSICS
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
Correct Answer: C. 12.50ms-2
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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