w=f[z] Posted June 21, 2007 Share Posted June 21, 2007 Warning: MATH ALERT Here may be a fun problem for you to think about and solve... In 1989, Shirley Muldowney set a new record for the fastest 1/4 mile by a wheel-driven car. If I told you that the coefficient of static friction between her tires and the road was mu = 3.34, what was her best possible time? Cheers, w=f[z] Footnote: Her record has been broken since, but I'm too lazy to look up the new number and owner of that number. Edit: Would someone be kind enough to tell me how to get LaTeX to work here. For example, $\mu=...$ doesn't seem to work. Thanks! Link to comment Share on other sites More sharing options...
timo Posted June 21, 2007 Share Posted June 21, 2007 [ math] latex code [ /math], e.g. [math] \psi_\mu = J_\mu [/math]. Link to comment Share on other sites More sharing options...
w=f[z] Posted June 21, 2007 Author Share Posted June 21, 2007 [ math] latex code [ /math], e.g. [math] \psi_\mu = J_\mu [/math]. Muchas gracias! [math]\mu_s=3.34[/math] Link to comment Share on other sites More sharing options...
w=f[z] Posted June 22, 2007 Author Share Posted June 22, 2007 Would it help to mention that all you need to solve this is a little algebra and some intro-physics type knowledge.... Cheers Link to comment Share on other sites More sharing options...
CPL.Luke Posted June 26, 2007 Share Posted June 26, 2007 mg mu= ma mu*g=a 3.34*32=~109 1375=53*t^2 5 seconds roughly, which would be an impressive time. it should be noted I used some guesstimations for the arithmatic Link to comment Share on other sites More sharing options...
w=f[z] Posted June 26, 2007 Author Share Posted June 26, 2007 Not bad CPL. I see you refrained from converting to SI. There's still room for someone to verify CPL's result.... Good fun! Cheers Link to comment Share on other sites More sharing options...
CPL.Luke Posted June 26, 2007 Share Posted June 26, 2007 yeah since you gave part of the problem in english units there was no need. Link to comment Share on other sites More sharing options...
cjohnso0 Posted July 3, 2007 Share Posted July 3, 2007 The current record (from the NHRA) is 4.428 by Tony Schumacher back in '06. This is a Top Fuel dragster I believe. I'm looking for a reliable source for the 3 second rocket cars still. Link to comment Share on other sites More sharing options...
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