Homework Statement
The rigid truss supports the loads shown. Find the reactions the pin A and roller D exert on the truss.
All concentrated loads act on the pins joining the truss membersHomework Equations
ƩMa= -5ft(3kips)-10ft(2kips)-.707(1kip)10ft+Dy(15ft)
Dy=2.80 kips*ft
The Attempt at a...
Oh I see what I've been doing now. When I evaluated theta at 0 I was getting -2. I forgot to multiply this by 1/2 which would have given me 3(pi)(-2+2)/2 or 3(pi)/2 for my final answer. Thank you so much for all of your help I was stuck on that problem for awhile. :smile:
Homework Statement
Use a double integral to find the area of the region bounded by the curve r= 1+sin(theta)?
Homework Equations
The Attempt at a Solution I can't figure out what theta is intregrated from. I've tried from -(pi)/2 -> +(pi)/2 and that doesn't work. I've also tried...
The point I picked on the line l for the parametric equation was not point (1,1,2)... So whatever point you pick on the line for your parametric equation is that your t=0 point?
If I were to pick point (1,1,2) on the line l for the parametric equation then it becomes x=1+t u=1+2t z=2+3t...
idk if you change it by one I guess you reach along the line one. I just don't know this stuff because we haven't covered it yet in class yet we have homework over it.
I know that the magnitude of the vector with the point c is 5. So using cos(36.7)=x/5
I get x=4 this is the length along line l. However this is in three dimensions so I thought that there was something else I had to do.
Homework Statement
Find point d on the line l closest to the point c (1,1,7). Point c is on the end of a vector who's origin (1,1,2) is on line l. There is an imaginary line that connects point c to point d. This imaginary line is perpendicular to the line l. This problem is relating to...
Yeah I figured it out. It was talking about the dip for the west direction not the strike. I was mixing two different things up. Thats why it was making any sense... Thank you