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I duno

Sumation of all forces must be equal. Left = right

F1+F2= F3+F4

2x30kN + 1x40kN=2x35kN+F4

F4=2x30kN + 1x40kN - 2x35kN
F4=60kN + 40kN - 70kN
F4=30kN

2007-04-17 02:26:22 · answer #1 · answered by Edward 7 · 0 0

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