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A car goes around an icy banked curve (frictionless) at a speed that is not too...

A car goes around an icy banked curve (frictionless) at a speed that is not too fast so that the car stays on the circula path. What causes the car to follow the circular path?

A car goes around an icy banked curve (frictionless) at a speed that is not too fast so that the car stays on the circula path. What causes the car to follow the circular path?

the normal force from the road
gravity
the friction force from the road
No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration.
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Answer #1

The normal force from the road because if the car is on a banked turn, the normal force (which is always perpendicular to the road's surface) is no longer vertical. The normal force now has a horizontal component, and this component can act as the centripetal force on the car. Given just the right speed, a car could safely negotiate a banked curve even if the road is covered with perfectly smooth ice!

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