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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
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Correct Answer: Option C
Explanation

\(\alpha = \omega^2\)r

             = 5\(^2\) x 2.5 = 25 x 2.5 = 62.5ms\(^{-2}\)

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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