- #1
Misr
- 385
- 0
I don't understand what makes us analyise a certain force into two perpendicular components
see this page
http://library.thinkquest.org/C001429/statics/pressure.htm
[URL]http://library.thinkquest.org/C001429/images/cos.jpg[/URL]
why do we calculate pressure in this image from the relation P = F cos q/A
why not P=F/A?? Is this beacuse pressure is always perpendicular?and if so why is pressure perpendicular,when the force makes an angle with the normal?
see this page
http://library.thinkquest.org/C001429/statics/pressure.htm
[URL]http://library.thinkquest.org/C001429/images/cos.jpg[/URL]
why do we calculate pressure in this image from the relation P = F cos q/A
why not P=F/A?? Is this beacuse pressure is always perpendicular?and if so why is pressure perpendicular,when the force makes an angle with the normal?
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