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80 meters. Since the only force on the car is centripetal force then:

Fc = mac

ac = v2/r

Fc = (mv2)/r

Solve for r

r = (mv2)/Fc

r = (1200)(20)2/(6000)

r = 80m

(See my work in the link below.)

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Q: A car with a mass of 1200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second The centripetal force on the car is 6000 newtons What is the radius of the curve?
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