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12_P23InstructorSolution - 12.23 Model The beam is a solid...

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12.23. Model: The beam is a solid rigid body. Visualize: The steel beam experiences a torque due to the gravitational force on the construction worker ( ) G C F G and the gravitational force on the beam ( ) G B . F G The normal force exerts no torque since the net torque is calculated about the point where the beam is bolted into place. Solve: The net torque on the steel beam about point O is the sum of the torque due to ( ) G
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