What is the Engineer's Magic Box?

AI Thread Summary
The discussion revolves around the search for an image of the "engineer's magic box," which is identified as the "black box." Participants suggest checking the Wikipedia page for more information. An attachment with a representation of the concept is shared, indicating a need for visual reference in a PowerPoint presentation. The conversation is focused on clarifying terminology and sourcing images related to engineering concepts. The inquiry highlights the importance of accurate terminology in technical discussions.
octohydra
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I figured this is the best place for asking this question. My apologies for those that find it inappropriate.

I am looking for an image of the engineer's magic box for a powerpoint :(. If it has a proper name, please tell me. See the attachment for my MS Paint representation.
 

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  • magic box.JPG
    magic box.JPG
    3.6 KB · Views: 529
Engineering news on Phys.org

Thread '2:1 Pulley Question'

I have Mass A being pulled vertically. I have Mass B on an incline that is pulling Mass A. There is a 2:1 pulley between them. The math I'm using is: FA = MA / 2 = ? t-force MB * SIN(of the incline degree) = ? If MB is greater then FA, it pulls FA up as MB moves down the incline. BUT... If I reverse the 2:1 pulley. Then the math changes to... FA = MA * 2 = ? t-force MB * SIN(of the incline degree) = ? If FA is greater then MB, it pulls MB up the incline as FA moves down. It's confusing...
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