Adjust the angle of the incline, and see what happens to the various force components.
Note that the slope turns red when there is not enough static friction to keep the block at rest.
Can you identify the various arrows on the free-body diagram, and figure out which forces are being plotted on the graph as you adjust the angle?

Simulation first posted on 10-4-2017. Written by Andrew Duffy

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This work by Andrew Duffy is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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