Question

so I'm doing the back of this worksheet and on the bottom there's a list of a whole bunch of formulas...

I'm asked to find the minimum coefficent of friction if the road was flat of a car which I still don't know how to do and posted a question about it below but anyways...

so I remember that u = tan (pheta) I don't remember how this is so I remember we derived it in class several months ago but don't remeber at least I think it was something like that were u = something something can you please show me this derrivation it had to something with trig laws and I forgot it

also I believe that it was u = tan (pheta) because on the back of my worksheet one formula wright next to Ff = u Fn is tan pheta = V^2/rg??????

were did this formula come from???

thanks

Answer 1

You need to throw the dang formulas away and learn physics. I suggest go through the exercise problems in your text. You are, in fact, lost.