4)You need to make a sharp turn on a ?at road, making a radius of curvature of 1

Question

4)You need to make a sharp turn on a ?at road, making a radius of curvature of 15 meters. How does the required force of static friction between your tires compare if you make the turn at 30 mph vs. 60 mph? A)The force of friction needs to be twice as large. B)The force of friction needs to be four times as large. C)the force of friction is the same for both speeds since the radius of curvature is the same. D)None of the above Show your work PLEASE! I know the answer is B, but I need equations. I'm lost when it comes to s/k friction

Explanation / Answer

B)The force of friction needs to be four times as large.

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