Statics Quiz
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FREE-BODY DIAGRAMS AND EQUILIBRIUM
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A rigid frame consists of three uniform rods forming a triangular pyramid: OA (2 m, 100 N), OB (2 m, 100 N), and OC (2 m, 100 N), where O is at the origin, A at (2,0,0), B at (0,2,0), and C at (0,0,2). The frame is supported by ball joints at A, B, and C. A horizontal load of 600 N in the +x direction is applied at point O. What is the magnitude of the reaction force at joint A?
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