A wooden bridge crossing a canyon consists of a plank with length density λ= 2.00 kg/m suspended at h =10.0 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000. N, which are attached to the ends of the plank, as shown in the figure. A hiker steps onto the bridge from the left side, causing the bridge to tip to an angle of 25.0° with respect to the horizontal. What is the mass of the hiker?

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