The circular door has a weight o f 55 lb and a center o f gr

The circular door has a weight o f 55 lb and a center o f gravity at G Determine the x,y, z component of reaction al the hinge A ami the focoe acting along strut CB needed to hold the door in equilibrium. Set theta - 30 deg

Solution

Note: we are suppose to answer 1 question at a time so i will answer question 1 for rest post the question again.

1) sets = Farm information and crop information ( two group as mention in the data)

parameters = crop, farm( both of these are the only parameters on which the question is based)

decision variavle = maximum number of acres ( we can change it with different crop, hence it can vary)

constraints = area, water( because both of these are fixed)

objective function = yield ( as we have to get maximum yield)