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


Question

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

Options

A) 164N

B) 160N

C) 158N

D) 172N

The correct answer is B.

Explanation:

ω = 2πF = 2π × 2 = 4πrad\(^{-1}\)
Centripetal force = mrω\(^2\)
⇒ 0.5 × 2 × (4π)\(^2\)
⇒ 160N


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