Sports, Exercise and Health Science · B.1 Generating movement in the body

SEB.1.4 — Levers in movement and sport

Sports, Exercise and Health Science · SL / HL · syllabus-mapped notes

1. SEB.1.4.1

   The three classes of lever

   Three different classes of levers, both within and outside the human body, work to create movements.

2. SEB.1.4.1.1

   Effort, fulcrum, load and mechanical advantage

   The relative positions of the effort, fulcrum and load determine the class, and the mechanical advantage and disadvantage, of the lever.

3. SEB.1.4.1.2

   Levers inside the body

   Levers inside the body work to create movement. They can be used to project an object that is outside the body or be used as an implement.

4. SEB.1.4.1.3

   Levers outside the body

   Levers outside the body can be used to enhance the functionality of movement in a physical activity or to enhance performance.