a) Solve the problem done in class
Find \(\Sigma M_{AB}\)
8kN
(-3,2,-5)
20kN
20° away from -x
70° away from -y
in x-y plain
B (2,5,-3)
12kN in x-direction
(3,4,-4)
(-1,-2,-1)
9kN
b) Find \(\Sigma M_{x-axis}\) (use (0,0,0) as reference pt.
8kN
(-3,5,-5)
(9,4,-3)
A (0,0,0)
(10,2,1)
12kN in x-direction
B(10,0,0)