# when is an inclined force analysed?

problem 1-5, James M. Gere's mechanics of materials text book

in the given example : for a, b and c he used the full 12k value of P to get the bearing and shear values. my logic was to analyse the forces when getting the shear on the pin G.

my instructure said we were using the max values of P, but that wasn't a satisfactory answer for me.

also : in a, the value for the bearing area is chosen to be 2dt where d is the diamter as shown. why isnt the bearing area as shown here? (hopefully that's a clear enough aiding diagram ) • "analyse the forces when getting the shear" You should elaborate on what you mean by that. Nov 27 '17 at 16:47
• I mean : shouldn’t a shear stress value be obtained from the parallel competent of the force only , not its full value . Nov 27 '17 at 18:39
• parallel to what? The base? Why? What if the strut was vertical, would you expect zero shear in the pin? Nov 27 '17 at 18:51
• In b) the shear stress in the pin G , in the answer it used the force 12k as is, my reasoning is that it should be analyzed parallel to the cross section of the pin Nov 27 '17 at 19:04