- #1
salman213
- 302
- 1
So we just were given some formulas and I am confused about this simple question
Find the differential length or distance between the two points.
P(2,pi/2,-1) and Q(5,3pi/2,5)I know this
for cylindrical
dL = dp (ap) + p dphi (aphi) + dz (az)
So i would integrate
I have a few questions does it matter if for example for dp
i integrate from 2 to 5 or from 5 to 2?
also in the aphi part, there is a "p" which is not constant in my problem so how can i do the integral with respect to dphi when p is not constant!
can I even use this?
helpEDITED: MY TEXT USES A DIFFERENT NOTATION I POSTED ANOTHER QUESTION AND THE INDIVIDUAL ALSO HAD PROBLEMS WITH MY NOTATION I HOPE THIS DIAGRAM HELPS IT'S FROM MY TEXTBOOK:
http://img261.imageshack.us/img261/7998/53164335jl9.jpg
Find the differential length or distance between the two points.
P(2,pi/2,-1) and Q(5,3pi/2,5)I know this
for cylindrical
dL = dp (ap) + p dphi (aphi) + dz (az)
So i would integrate
I have a few questions does it matter if for example for dp
i integrate from 2 to 5 or from 5 to 2?
also in the aphi part, there is a "p" which is not constant in my problem so how can i do the integral with respect to dphi when p is not constant!
can I even use this?
helpEDITED: MY TEXT USES A DIFFERENT NOTATION I POSTED ANOTHER QUESTION AND THE INDIVIDUAL ALSO HAD PROBLEMS WITH MY NOTATION I HOPE THIS DIAGRAM HELPS IT'S FROM MY TEXTBOOK:
http://img261.imageshack.us/img261/7998/53164335jl9.jpg
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