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Answer to Question #4340 in Mechanics | Relativity for Brent

Question #4340
I wasn't sure what category to ask this in, but this one seemed like the best bet. My question involves force and surface area.

Let's say there are two objects, Object A and Object B:
-Object A weighs a little less than Object B
-Object A has far more surface area than Object B
-Both Object A and Object B are being supported by identical structures

Which will have more force on the structure? How do I calculate the force (or would it be pressure?) that each object has on the structure?
Expert's answer
Force acting onthe structure is pressure:
P=F/S

[img width=38,height=36]file:///C:/Users/Sekventa/AppData/Local/Temp/OICE_35B08B2F-0A94-4E1C-9C21-F6F0D218CDFA.0/msohtmlclip1/01/clip_image002.png[/img]
where F is theweight of an object, S - the surface of an object that touches the structure.
So
Fa<Fb ; Sa>>SbPa=Fa/Sa; Pb=Fb/Sb

[img width=112,height=20]file:///C:/Users/Sekventa/AppData/Local/Temp/OICE_35B08B2F-0A94-4E1C-9C21-F6F0D218CDFA.0/msohtmlclip1/01/clip_image004.png[/img]
[img width=117,height=38]file:///C:/Users/Sekventa/AppData/Local/Temp/OICE_35B08B2F-0A94-4E1C-9C21-F6F0D218CDFA.0/msohtmlclip1/01/clip_image006.png[/img]
So A has lessforce on the struct. as its surface is bigger and force smaller.

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