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Problem 4: Find the Reactions at all the pins. The Distributed load at the top will instead be a uniform (rectangular) distriUSE METHOD OF JOINTS OR SECTIONS

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FBD of AB xS53.75kN NSLS Ay A AZ FBC FAD 3 m ア+ EMA=0 Point A At 3.75×2 ナFBLX3:o 8.7S X) 1 2 S -3. 75 KN FBC ED C FBD Of 3.75FADY Sin(53.13)15 t 3.7sx 3 t1X3 o - 32.25 FAD sin 53,13)X FAD 26 87 KN - 26.87 KN FAD 3.75-70 FADX SIn(S3.13) Ey -26.27xsin26.81x coS(S3.13 ) EN 16.12 FBD 0f AB FADX SinS3.13) - 3.75 -3.75 Ay t FB C (53 13) 26-8 X SL.s-SL O -3.1S KN 25 2S Ay FAD y16.12とN AX 2 S 2S KN AV 16.12 KN EX2 0.74 KN Ey

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