Question: Problem 3 . In the following diagram, ( A B ) and ( B C ) are rods with uniform cross

Problem 3. In the following diagram, \( A B \) and \( B C \) are rods with uniform cross-sections and uniform density, each with a mass of 10 kg . Rod \( A B \) is supported by a frictionless pin at \( A \) and connected to rod BC by a frictionless pin at B . Rod BC is connected to a block at C with a frictionless pin. The block at C has negligible weight and negligible dimensions and is in contact with the ground, \( D \).
(a) Determine if the system is in equilibrium.
(b) Find the reaction forces at A and C .
Problme 3. Dans la figure ci-dessous, \( A B \) et \( B C \) sont deux tiges de mme taille et de mme masse volumique, chacune d'une masse de 10 kg . La tige \( A B \) est supporte par une goupille sans frottement en \( A \) et relie la tige BC par une goupille sans frottement en \( B \). La tige BC est relie un bloc en \( C \) avec une goupille sans frottement. Le bloc en \( C \) a un poids ngligeable et de dimension ngligeable et il est en contact direct avec le sol, D.
(a) Dterminez si le systme est en quilibre.
(b) Trouvez les forces de ractions au point \( A \) et \( C \).
Problem 3 . In the following diagram, \ ( A B \ )

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