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Manual screw jack

Design a manual screw jack similar to that shown in the figurebelow for a 5-ton lift capacity and a 20-cm lift stroke. Assume thatan operator can apply a 300-N force at the tip of its bar handle toturn either the screw or nut depending on your design. Design thecylindrical bar handle to fail in bending at the design load beforethe jack screw fails, so that one cannot lift an overload and fail thescrew. Use rolling element thrust bearings. Seek a safety factor of 4for thread and column failure. State all assumptions

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