Calculate the work required to lift a 3-m chain over the side of a building. Assume that the chain has a density of 8 kg/m. Use g 9.8 m/s?. Hint: Break up the chain into N segments, estimate the work performed on a segment, and compute the limit as N → ∞ a an integral. 鱼鱼鱼 Segment of length Ay The small segment of the chain of length Ay located y m from the top is lifted through a vertical distance y. (Use decimal notation. Give your answer to one decimal place.) 田田

Calculate the work required to lift a 3-m chain over the side of a building. Assume that the chain has a density of 8 kg/m. Use g 9.8 m/s?. Hint: Break up the chain into N segments, estimate the work performed on a segment, and compute the limit as N → ∞ a an integral. 鱼鱼鱼 Segment of length Ay The small segment of the chain of length Ay located y m from the top is lifted through a vertical distance y. (Use decimal notation. Give your answer to one decimal place.) 田田