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the gym is equipped with ropes for rope-climbing exercises. the ropes are tied to the ceiling of the gym, and when they are in use they hang straight down and just touch the gym floor. when the ropes are not in use, they are stored by pulling the lower ends of the ropes aside and attaching them to hooks at the top of the bleachers, 4.0 m above the gym floor. our mischievous student, now at the top of the bleachers, unhooks one of the ropes and swings on it like a pendulum; as he passes the low point of his swing, his feet are just above the gym floor. what is the speed of the swinging student at the low point of his swing? (13 points)