(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

from giancoli 5th ed (algebra based)

chapter 4, question 42

Drag race tires in contact with an asphalt surface probably have one of the higher coefficients of static friction in the everyday world. Assuming a constant acceleration and no slipping of tires estimate the coefficient of static friction for a drag racer that covers the quarter mile in 6.0s

2. Relevant equations

3. The attempt at a solution

I converted quarter mile to m ----> 402.5m

using kinematic formula i found the acceleration a=22.36 m/s^2

[tex] \Sigma F = F_A - F_fr [/tex]

[tex] F_A - \mu_s F_N = mass 22.36 m/s^2 [/tex]

and than I got stuck....

the answer key states that I shouldn't have put applied force in the equation

but how does that make sense??? the person should have put applied for to have constant acceleration

anyways if there wasn't a applied force I can solve for static friction from the equation above

help me please

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# Homework Help: Static friction coefficient question

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