A 1100-kg car rounds an unbanked curve (radius = 0.080 km) without skidding at a speed of 75.0 km/h. $g = 9.8 \, m/s^2$. What is the minimum coefficient of static friction between the tires and the road to drive the car without skidding? (tip: Normal Force = Weight)
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0 \, \frac{km}{h} \times \frac{1000 \, m}{1 \, km} \times \frac{1 \, h}{3600 \, s} = 20.83 \, m/s$ Show more…
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A curve of radius 150 m is banked at an angle of 10°. An 800-kg car negotiates the curve at 85 km/h without skidding. Find: a. The normal force exerted by the pavement on the tires. b. The frictional force exerted by the pavement on the tires. c. The minimum coefficient of static friction between the pavement and the tires.
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(III) If a curve with a radius of 88 $\mathrm{m}$ is perfectly banked for a car traveling 75 $\mathrm{km} / \mathrm{h}$ , what must be the coefficient of static friction for a car not to skid when traveling at 95 $\mathrm{km} / \mathrm{h}$ ?
(II) What is the maximum speed with which a 1050 -kg car can round a turn of radius 77 $\mathrm{m}$ on a flat road if the coefficient of static friction between tires and road is 0.80$?$ Is this result independent of the mass of the car?
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