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Earlier discussion
2 older comments kept for context.
Okeke Prisca
The multiplication gave 158 not 160. So how come?
Doctor Strange
ω = 2πF = 2π × 2 = 4πrad\(^{-1}\)
Centripetal force = mrω\(^2\)
⇒ 0.5 × 2 × (4π)\(^2\)
⇒ 160N