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A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 ...

A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force
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  • A 164N
  • B 160N
  • C 158N
  • D 172N
Correct Answer: Option B
Explanation:
ω = 2πF = 2π × 2 = 4πrad\(^{-1}\)Centripetal force = mrω\(^2\)⇒ 0.5 × 2 × (4π)\(^2\)⇒ 160N

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