Question: Figure P3 Ho 4 m P B I 4 m F J 4 m b) Calculate the vertical reaction at support A. [0 mark]

Figure P3 Ho 4 m P B I 4 m F J 4 m b) Calculate the vertical reaction at support A. [0 mark] Provide your answer in units of kN to 4 decimal places. Indicate a horizontal force pointing left as being negative. Use '-' to denote a downwards force, otherwise no sign is needed. E 4 m D c) Calculate the horizontal reaction at support A. [0 mark] Provide your answer in units of kN to 4 decimal places. Indicate a horizontal force pointing left as being negative. Use '-' to denote a downwards force, otherwise no sign is needed. d) Calculate the force in member AH. [1 mark] Provide your answer in units of kN to 4 decimal places. Use '-' to denote a compression force, otherwise no sign is needed to denote a tension force. e) Calculate the force in member AB. [2 marks] Provide your answer in units of kN to 4 decimal places. Use '-' to denote a compression force, otherwise no sign is needed to denote a tension force. f) Calculate the force in member GF. [2 marks] Provide your answer in units of kN to 4 decimal places. Use '-' to denote a compression force, otherwise no sign is needed to denote a tension force. g) Calculate the force in member IC. [2 marks] Provide your answer in units of kN to 4 decimal places. Use '-' to denote a compression force, otherwise no sign is needed to denote a g) Calculate the force in member IC. [2 marks] Provide your answer in units of kN to 4 decimal places. Use '-' to denote a compression force, otherwise no sign is needed to denote a tension force. h) Determine the maximum allowable magnitude of P if the member GH can support 8kN. Provide your answer in kN to 4 decimal places. [2 marks] i) Assume now with different loading the axial force in member GF equals -33 kN. What is the minimum second of moment of area of this section such that it will not fail by buckling. Assume a strength factor of safety for strength of 1.3. E = 200,000 MPa and the material yield strength = 300 MPa. Provide your answer in units of mm4 to at least 6 significant figures. [1 mark] Minimum second moment of area [mm4] =

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Solutions Step 1 Part g To calculate the force in member IC we can use the method of sections We will cut the truss through members IC HI and JA as sh... View full answer

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