A 4.00-m-long, 460 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. a 73.0 kg construction worker stands at the far end

A 4.00-m-long, 460 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. a 73.0 kg construction worker stands at the far end of the beam. part a what is the magnitude of the torque about the point where the beam is bolted into place?