- #1
stupif
- 99
- 1
1. every member is 0.45m and all the angle is 45degree...
C is fixed support, D is roller support
3. Ʃfx = 0 , Cx = 0
Ʃfy = 0 , Cy + Dy = 20N
ƩMc = 0 , 20(0.45) + Dy(0.45) = 0
Dy = -20N
OR
Ʃfx = 0 , Cx - Dx = 0
Cx = Dx
Ʃfy = 0, Cy -20N = 0
Cy = 20N
ƩMc = 0 , 20(0.45) + Dx(0.45) = 0
Dx= -20N
may i know which one is correct??
help me...please...
C is fixed support, D is roller support
3. Ʃfx = 0 , Cx = 0
Ʃfy = 0 , Cy + Dy = 20N
ƩMc = 0 , 20(0.45) + Dy(0.45) = 0
Dy = -20N
OR
Ʃfx = 0 , Cx - Dx = 0
Cx = Dx
Ʃfy = 0, Cy -20N = 0
Cy = 20N
ƩMc = 0 , 20(0.45) + Dx(0.45) = 0
Dx= -20N
may i know which one is correct??
help me...please...