Question 1149457
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The component of the weight normal to the inclined plane is  {{{W[n]}}} = {{{W*cos(alpha)}}}  (normal force).
The component of the weight parallel to the inclined plane is  {{{W[s]}}} = {{{W*sin(alpha)}}}  (shear force). 


See the lesson

&nbsp;&nbsp;&nbsp;&nbsp;-<A HREF=https://www.algebra.com/algebra/homework/Vectors/Using-vectors-to-solve-problems-in-Mechanics%3A-Force.lesson>Using vectors to solve problems in Mechanics: Force</A>

in this site.