Find the childs speed at the lowest point.an elevator has, Ask an Expert

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Q. A 19kg child sits in a swing supported by two chains each 3m long. If tension in each chain at the lowest point is 140N find the childs speed at the lowest point.

Q. An elevator has mass 610 kg, not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 17.0 s and it is driven by a motor that can provide up to 40 hp to the elevator.

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