A lever has a total length of 12 meters with a fulcrum at the exact center of the lever. Which best describes how to double the mechanical advantage of the lever?

A lever’s mechanical advantage is the effort arm divided by the load arm. At the center, both arms are 6 meters, so the mechanical advantage is 6/6 = 1. Moving the fulcrum 2 meters away from the force side makes the effort arm 8 meters and the load arm 4 meters, giving a mechanical advantage of 8/4 = 2. So move the fulcrum 2 meters away from the side where force is applied.

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