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      • The lever has two “arms”: The load arm (or output arm) is the por-tion of the lever directly connected to the load. The efort arm (or arm of applied force) is the portion of the lever to which we apply the efort, or input force.
      www.assp.org/docs/default-source/psj-articles/mtricketts_1020.pdf?sfvrsn=9d188947_2
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  2. A lever is a simple machine made of a rigid beam and a fulcrum. The effort (input force) and load (output force) are applied to either end of the beam. The fulcrum is the point on which the beam pivots. When an effort is applied to one end of the lever, a load is applied at the other end of the lever.

  3. May 18, 2023 · The effort arm (or arm of applied force) is the portion of the lever to which we apply the effort, or input force. Force is a push or pull in a particular direction (e.g., up, down, left, right, rotational).

  4. This free textbook is an OpenStax resource written to increase student access to high-quality, peer-reviewed learning materials.

  5. Mar 9, 2022 · Fulcrum: The pivot point about which the beam rests and moves freely. Since the beam can move freely, the fulcrum is also known as the lever’s turning point. Load: The object on the beam that the lever tries to move or lift. Effort: The force applied to lift or move the object, resulting in work.

  6. By positioning the fulcrum close to a heavy object and applying an effort from far away, levers can be used to lift enormous loads with ease (refer to Figure 1). The object being moved by the lever is often called the load, or output force, while the force applied to the lever is called the effort, or input force.

  7. Jul 29, 2020 · The efficiency of a lever relies on the ratio of the effort arm to the load arm. The effort arm (EA) is the distance between the fulcrum and the effort; in the body, this is the distance between the joint and the muscle’s insertion site.

  8. Mar 12, 2024 · Increasing effort arm reduces the size of the effort needed to balance the load, which means greater mechanical advantage. In fact for a lever, the mechanical advantage is equal to the ratio of the effort arm to resistance arm.

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