Hi, My book says that although there is a natural point of rotation, we can however choose any point as a center of rotation. But without explaining further, it goes directly to an example where the endpoint is the center of rotation. I would like to know what the book means by being able to choose any point as a center of rotation. For example, A painter weighing 150lbs is standing on a 6ft scaffold at a distance of 2 ft from one end. How much weight must each end of the scaffold hold? F1 + F2 = 150lbs Torque = Torque Fs = Fs 150lbs(2ft) = F2(6ft) F2 = 50lbs So F1 + F2 = 150lbs F1 + 50lbs = 150lbs F1 = 100lbs Here, F1 was the point of rotation. But how can this problem be approached if a different point of rotation is considered? And is there an infinite number of choices for points of rotation? Or is there a finite number of possible points/centers of rotation?