The right hand turn before was dangerous because is requires a larger centripetal acceleration and force than afterwards. This is because radius and centripetal force have an inverse relationship that is shown in the centripetal force formula Fc=mv²/r. This makes sense because the turn is less sharp because of the greater radius, so it takes you a longer distance to complete the turn. Centripetal force is the force that causes circular motion that is always pointing towards the center of the circle. In this circumstance, the centripetal force is a frictional force between the car's tires and the ground. When the road is icy there is less friction between the tires and the ground which can make the original turn very dangerous and could cause the car to skid into the intersection because the centripetal force is not great enough to complete the turn. After the change, the greater radius of the turn makes there be less friction required to make the turn so cars are less likely to skid into the intersection.
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AuthorPhysics student at Flint HIll Archives
April 2019
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