what must be the coefficient of static friction for a car not to skid when traveling at 90km/h?

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what must be the coefficient of static friction for a car not to skid when traveling at 90km/h?

if a curve with a radius of 80m is perfectly banked for a car traveling 70km/h

2006-10-15 14:21:15 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

http://en.wikipedia.org/wiki/Coefficient_of_friction

2006-10-16 17:34:53 · answer #1 · answered by Surya M. 3 · 0⤊ 1⤋

r = seventy two m v = ninety one km/h = ninety one * one thousand/3600 m/s = 25.28 m/s enable coefficient of friction = u. Friction tension = u * Mg Centripetal tension = Mv^2/r vehicle can around the curve if u * Mg = Mv^2/r Dividing via M, ug = v^2/r u = v^2/(rg) = 25.28^2/(seventy two*9.8) = 0.ninety one Ans: 0.ninety one

2016-12-13 08:59:41 · answer #2 · answered by ? 4 · 0⤊ 0⤋