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Question
What about the kinetic friction between the road and the tyres?
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Solution
Longitudinal forces control a car’s acceleration and speed by acting in the same or opposite direction as its motion. These include wheel force, rolling friction, braking force, and air drag. When a car skids, the friction force is kinetic. The friction force shifts abruptly from lateral to opposite the skid’s velocity, rather than toward the centre of the curve, preventing the automobile from continuing on its curved course.
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Answer in Brief:
Part of a racing track is to be designed for curvature of 72m. We are not recommending the vehicles to drive faster than 216 kmph. With what angle should the road be tilted? By what height will its outer edge be, with respect to the inner edge if the track is 10 m wide?
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