the pin connected structure shown below is loaded by a horizontal load
The pin-connected structure shown below is loaded by a horizontal load of 10 kips and a vertical load of 5 kips at point 1. The X, Y coordinates in ft. are shown next to each node. EA = 10,000kips for each member. a) Using the direct stiffness method, determine the 2 x 2 global stiffness matrix [K]. Clearly indicate its units. I By inverting the global stiffness matrix [K] obtained in a), determine the 2 x 2 global flexibility matrix [F]. Clearly indicate its units. c) Using the global flexibility matrix [F] obtained in b) calculate the horizontal and vertical deflections in inches at point 1. d) Using the element stiffness matrix of member 1, determine the horizontal and vertical support reactions at point 2. Clearly indicate their directions. e) Using the elements stiffness matrix for element 1, determine the axial force in member 1.Clearly indicate if it is in tension or compression.
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