The 2° tapered pin is forced into a mating tapered hole in the fixed block with a force P = 400 N. If the force required to remove the pin (with P = 0) is P' = 300 N, determine the coefficient of friction between the pin and the surface of the hole. (Hint: The pres- sure (stress) normal to the tapered pin surface remains unchanged until the pin actually moves.
The distributed forces over the surface of the pin may be replaced by an equivalent single resultant force.)