prob_004 (2) - 4 REASONING The magnitude ac of the cars...

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4. REASONING The magnitude a c of the car’s centripetal acceleration is given by Equation 5.2 as 2 c / av r = , where v is the speed of the car and r is the radius of the track. The radius is r = 2.6 × 10 3 m. The speed can be obtained from Equation 5.1 as the circumference (2 π r ) of the track divided by the period T of the motion. The period is the time for the car to go once around the track (
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