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P. om B Revie Consider the steel truss shown in Figure 1) to answer Parts A B. and C below, where P. = 32 kN and P, = 58 kN The cross-sectional area of each member is A = 200 mm. and B = 200 CPa. Part A - Horizontal displacement Use the method of virtual work to determine the horizontal displacement of joint D due to the applied loads. Let a positive answer representa displacement to the right and a negative answer represent a displacement to the left Express your answer in the appropriate units to three significant figures. View Available Hint(s) HA ? An = 5.85 mm I Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B - Vertical displacement Use the method of virtual work to determine the vertical displacement of joint E due to the applied loads. Let a positive answer represent an upward displacement and a negative answer represent a downward displacement. Express your answer in the appropriate units to three significant figures. View Available Hint(s) HA ? ΔΕ, = - 9.464 mm Submit Previous Answers
- Part C - Change in temperature Determine the vertical displacement of joint E if, in addition to the applied loads, members BE and CE experience a temperature increase of AT = 21 °C. The steel's coefficient of thermal expansion used in the truss is 1.20(10 5)/K. The truss is still subjected to external loads Pi and P. Let a positive answer represent an upward displacement and a negative answer represent a downward displacement Express your answer in the appropriate units to three significant figures. ► View Available Hint(s) μΑ ? ΔΕ, Value Units Submit