Journal Bearings EXAMPLE PROBLEM // Comparing the approximation equation and the exact equation

In this video I go through a simple example problem involving the frictional forces on journal bearings. I also compare the differences in using the exact equation and the approximation equation.
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[@sikebamulamata5693]

🔥🔥🔥

[@studentengineering]

Thanks!

[@michaeltakundachihora235]

I don't understand how you came up with the so called triangle

[@studentengineering]

Great question! The two triangles are made by the belt, the line of action of the reaction force, and the line that is tangent to the circle and intersects the line of action of that reaction force. They aren’t perfect triangles since the belt is rounded where it goes over the pulley but they are close to being triangles. Does that make sense?

[@mwenge6355]

I'm I the only one who this topic doesn't make sense to

[@studentengineering]

What part doesn’t make sense?

[@mwenge6355]

@@studentengineering 1. how is that f component having a vertical component? (unless I haven't understood it properly)
2. I'm not understanding the logicc behind that equation that had M/ (something). (Sorry I can't remember some things properly
3. I'm also not understanding the logic for the derivation of the R equation. ( the 20cos45 + Fcos45)

[@studentengineering]

Hmm, I’m not sure how else to explain it other than how I did in the video. Did you watch the video more than once? You could also see if there are other videos that explain it differently than I do

[@mwenge6355]

@@studentengineering let me try and watch it again, maybe I'll get it