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A 38-kilogram child roller skates on a circular track with a radius of 24 m. Her velocity is 6.0 m/s. How much centripetal force does she experience?

A0.16 N

B0.38 N

C57 N

D580 N

Verified Answer :

Edufirst

Force = mass centripetal acceleration; F = ma

Centripetal acceleration, a = velocity^2 / radius; a = v^2 / r

F = m v^2 / r

F = 38 kg [6.0 m/s]^2 / 24 m = 57 N

Answer: option C) 57 N

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