Answer:
Tension in cable BE= 196.2 N
Reactions A and D both are 73.575 N
Explanation:
The free body diagram is as attached sketch. At equilibrium, sum of forces along y axis will be 0 hence
hence

Therefore, tension in the cable, 
Taking moments about point A, with clockwise moments as positive while anticlockwise moments as negative then



Similarly,


Therefore, both reactions at A and D are 73.575 N
I think it’s structural engineers but still check with the others
Answer:
A.) 0.3088
B.) 0.0017
C.) part A
Explanation:
A.)




B.)


C.) Since the seat performance for an individual pilot is more important than 39 different pilots.