A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 13.3 m/s, the total force on the car (due to friction with the road) has magnitude 127 N. If the driver would have been driving 16.8 m/s, what would the force have been instead?(adsbygoogle = window.adsbygoogle || []).push({});

∑F= mac = m* v^2/r This is the original equation I thought of using until I realized that I don't have r or m. When the problem mentions the total force as being 127N I assumed that was ∑F. Acceleration would be zero since speed is constant but that's not necessarily the same thing centripetal acceleration is it?

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# Homework Help: Force around a horizontal circle

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