Julie has been hired to help paint the trim of a building, but she is not convinced of the safety of the apparatus. A 4.4 m plank is suspended horizontally from the top of the building by ropes attached at each end. She knows from previous experience that the ropes being used will break if the tension exceeds 1.0 kN. Her 90 kg boss dismisses Julie's worries and begins painting while standing 1.0 m from the end of the plank. If Julie's mass is 51 kg and the plank has a mass of 21 kg, then over what range of positions can Julie stand to join her boss without causing the ropes to break?