1. Determine the approximate values of force in each member of the truss in Figure P13.13. Assume that the diagonals can carry either tension or compression force.

2. Determine the approximate values of bar force in the members of the truss in Figure P13.14 for the following two cases:

(a) Diagonal bars are slender and can carry only tension.

(b) Diagonal bars do not buckle and may carry either tension or compression.