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I keep getting this one wrong. For T1, I did 370/cos(30) = 427.24 lb tension , and -427.24 x cos(30)= -370. I also tried T1=820, and T2=-710.14, which was not correct as well. Thank you for your help on these two parts

I keep getting this one wrong. For T1, I did 370/cos(30) = 427.24 lb tension , and -427.24 x cos(30)= -370. I also tried T1=820, and T2=-710.14, which was not correct as well. Thank you for your help on these two parts

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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I keep getting this one wrong. For T1, I did 370/cos(30) = 427.24 lb tension , and -427.24 x cos(30)= -370. I also tried T1=820, and T2=-710.14, which was not correct as well. Thank you for your help on these two parts
5.2.1 Learning Goal: To learn to apply the method of joints to a truss in a systematic way and thereby find the loading in each member of the truss. In analyzing or designing trusses, it is necessary to determine the force in each member of the truss. One way to do this is the method of joints. The method of joints is based on the fact that if the entire truss is in equilibrium, each joint in the truss must also be in equilibrium (i.e., the free-body diagram of each joint must be balanced). Consider the truss shown in the diagram. The applied forces are P₁ =650 lb and P₂ = 370 lb and the distance is d = 8.50 ft. (Figure 1) E 30⁰ d FCB FCD = B D P₁ Part B - The Forces in the Members at Joint C tension compression 30° Part C - The Sense of the Forces d What are the forces in the two members CB and CD? Express the magnitudes of the forces to three significant figures. Separate your answers with a comma. ▸ View Available Hint(s) 195| ΑΣΦ | 11 | vec с State if the members considered in part B are in tension or compression. Complete each sentence by dragging the appropriate word into the blank. The words can be used more than once. Member CB is in lb, lb Member CD is in Reset Help
Transcribed Image Text:5.2.1 Learning Goal: To learn to apply the method of joints to a truss in a systematic way and thereby find the loading in each member of the truss. In analyzing or designing trusses, it is necessary to determine the force in each member of the truss. One way to do this is the method of joints. The method of joints is based on the fact that if the entire truss is in equilibrium, each joint in the truss must also be in equilibrium (i.e., the free-body diagram of each joint must be balanced). Consider the truss shown in the diagram. The applied forces are P₁ =650 lb and P₂ = 370 lb and the distance is d = 8.50 ft. (Figure 1) E 30⁰ d FCB FCD = B D P₁ Part B - The Forces in the Members at Joint C tension compression 30° Part C - The Sense of the Forces d What are the forces in the two members CB and CD? Express the magnitudes of the forces to three significant figures. Separate your answers with a comma. ▸ View Available Hint(s) 195| ΑΣΦ | 11 | vec с State if the members considered in part B are in tension or compression. Complete each sentence by dragging the appropriate word into the blank. The words can be used more than once. Member CB is in lb, lb Member CD is in Reset Help
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