The wheels of a 1.450x10 3 kg car are locked so that it can only slide on wet co
ID: 1682614 • Letter: T
Question
The wheels of a 1.450x103 kg car are locked so that it can only slide on wet concrete at a constant speed of 3.00 m/s when pulled by a horizontal force of 3.45x103 N. A) Find the coefficient of sliding friction for rubber on wet concrete (book says for static friction is is 0.7 and for kinetic it is 0.5) B) What is the acceleration of the car after 3.50s? (question does NOT refer to ch.4 o as stated in title) The wheels of a 1.450x103 kg car are locked so that it can only slide on wet concrete at a constant speed of 3.00 m/s when pulled by a horizontal force of 3.45x103 N. A) Find the coefficient of sliding friction for rubber on wet concrete (book says for static friction is is 0.7 and for kinetic it is 0.5) B) What is the acceleration of the car after 3.50s? (question does NOT refer to ch.4 o as stated in title)Explanation / Answer
mass m = 1.45 * 10^ 3 kg speed v = 3 m / s horizontal force F = 3.45* 10^ 3 N in constant speed , applied force = frictional force So, fricional force f = F = 3.45* 10 ^ 3 N u mg = 3.45* 10 ^ 3 from this coeffcient of cliding u = 0.242
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