Starting with the formula mg sin A = umg cos A, you can derive tan A = u to find the angle A of an incline and the coefficient of friction u of objects on the incline.
2 answers
Yes, I can.
and here is how
http://www.jiskha.com/display.cgi?id=1413211761
http://www.jiskha.com/display.cgi?id=1413211761