A 51.0 painter is on a uniform 23.0 scaffold supported from above by ropes . There is a 2.0 pail of paint to one side, as shown.
Let the scaffold be extended beyond 1m. Let the man walk beyond the right rope. Now tension in the left rope will be zero, if balanced. No units are given Now to the left of the right rope there are two forces, 1. due to the pail and 2. due to the weight of the scaffold. To the right of the right rope the man is standing at a distance d m from the right rope. Taking moment about the right rope, 23*2 + 2*3 = 51* d d = 1.01 m Since the scaffold has an extension of 1m from the right rope, the man go to the extreme right end of the right rope. ======================================... Suppose he moves to the left of the left rope, then the tension in the right rope is zero Taking moment about the left rope, 51* d = 23*2 + 2*1 d = 0.94 m That is from the left end this distance is 1- 0.94 = 0.06 m ===========================
