Trusses METHOD OF JOINTS, NO Reactions Needed, in 3 Minutes!

Truss members internal forces example in 3 minutes (when the reaction forces of the structure are not needed to use the Method of Joints).
Trusses
Method of Joints
Method of Sections
Example 1: • Trusses METHOD OF JOIN...
Example 2: • TRUSSES Method of Join...
Example 3: • Trusses METHOD OF SECT...
Example 4: • TRUSSES Method of Sect...
Main Lecture Video Link:
Statics - Trusses - Method of Joints & Method of Sections in 12 Minutes
• TRUSSES - Method of Jo...
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Statics Course Links:
WATCH ALL STATICS CONTENT IN LESS THAN 2 HOURS!
Force Vectors and Vector Components: • Force Vectors and VECT...
Particle Equilibrium and Free Body Diagrams (Springs and Pulleys): • FREE BODY DIAGRAMS and...
Rigid Body Equilibrium and Sum of Moments: • Sum of MOMENTS and Rig...
Trusses - Method of Joints & Method of Sections: • TRUSSES - Method of Jo...
Shear Force and Bending Moment Diagrams: • SHEAR and BENDING Mome...
Centroids: • CENTROIDS and Center o...
Fluid (Hydrostatic) Pressure: • HYDROSTATIC PRESSURE (...
Friction: • FRICTION in 10 Minutes...
Two and Three Force Members: coming soon
Machines: coming soon
Second Moment of Area (Inertia): coming soon
Mass Moments of Inertia: coming soon

[@arsalali5150]

Why did we not need to calculate the reaction forces?

[@sumaiyajerin2859]

Shouldn't F_CD = - F_DC = -800 ?

[@zaidalzanoon4877]

I’m a bit confused as to where the 3/5 is coming from

[@mursalin5760]

here CE is 3 in this case