Question: Using the stiffness method, determine the horizontal and vertical components of displacement of joint 1 in Figure P15.2. Also compute all bar forces. For all

Using the stiffness method, determine the horizontal and vertical components of displacement of joint 1 in Figure P15.2.

Also compute all bar forces. For all bars, $L$ $=20 \mathrm{ft}, E=30,000 \mathrm{kips} / \mathrm{in} .^{2}$, and $A=3{\mathrm{in} .{ }^{2} \text {. }}^{2}$

(2) 2 12- 1. 60 kips 30 12' 3 16'

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