Chapter 12, Problem 56P

Figure 12-65a show’s a uniform ramp between two buildings that allows for motion between the buildings due to strong winds.At its left end, it is hinged to the building wall; at its right end, it has a roller that can roll along the building wall. There is no vertical force on the roller from the building, only a horizontal force with magnitude F_h. The horizontal distance between the buildings is D = 4.00 m. The rise of the ramp is h = 0.490 m. A man walks across the ramp from the left. Figure 12-65b gives F_h as a function of the horizontal distance x of the man from the building at the left. The scale of the F_h axis is set bya = 20 kN and b = 25 kN. What are the masses of (a) the ramp and (b) the man?