A 2.0m long bar is being used as a first-class lever. It has a load of 720 N placed on one end (located 1.2 m from the fulcrum) and the effort is being applied at the opposite end. A. State the law of the leaver B draw a diagram of the lever, showing the load,effort,fulcrum, effort arm, and load C determine the effort force needed to balance the load. D if this lever has an actual mechanical advantageous 1, determine the percent efficiency of the leaver.

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