Question 1154888
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<pre>
For each mass, calculate the corresponding <U>shear</U> force, directed along the incline; then compare them.


For the left mass, the shear force is 100*sin(30°) = {{{100*(1/2)}}} = 50.0 pounds.


For the right mass, the shear force is 85*sin(45°) = {{{85*sqrt(2)/2}}} = 60.10 pounds.


For the right mass, the shear force is greater; hence, WHAT ?
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On incline planes, you may learn the subject and the terminology from this Wikipedia article

https://en.wikipedia.org/wiki/Inclined_plane


or from many other good sources in the Internet. The key word is "incline plane" in GOOGLE searching machine.