Physics

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A crane is holding a bloc of metal of 10 000kg. If the crane's arm weights 1000kg and is 10,0m long, what is the tension in cable a and how big is the force exerted on the pivot of the cranes arm.

the cable passes through the top of the cranes arm and then is vertical whilst holding the bloc of metal. The angle formed by the cable on the left side with the arm is 10* and is of 45* on the right side of the arm, between it and the bloc of metal + cable. I'm sorry but this is the best way for me the explain the image. The crane is pointing to the right.

Thank you

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