The length from the wheel and axle to the effort is 5 ft.Ĥ.Illustrate and annotate the lever system described above.ĥ.What is the ideal mechanical advantage of the system?Ħ.Using static equilibrium calculations, calculate the effort force needed to overcome the resistance force in the system. The length from the wheel axle to the center of the load is 2 ft. FormulaSubstitute / SolveFinal AnswerĪ wheel barrow is used to lift a 200 lb load. The lever’s effort force is located 4 ft from the fulcrum.ġ.Sketch and annotate the lever system described above.Ģ.What is the actual mechanical advantage of the system?ģ.Using static equilibrium calculations, calculate the length from the fulcrum to the resistance force. Be sure to document all solution steps and proper units.Īll problem calculations should assume ideal conditions and no friction loss.Ī first class lever in static equilibrium has a 50lb resistance force and 15lb effort force. Illustrations should consist of basic simple machine functional sketches rather than realistic pictorials. Each question requires proper illustration and annotation, including labeling of forces, distances, direction, and unknown values. Activity 1.1.2 Simple Machines Practice Problems Answer KeyĪnswer the following questions regarding simple machine systems.
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