Lever and pulley system simplified

In this lesson, I explain the mechanical principles of simple machines- levers, pulleys, angle of pull, effort arm, weight arm, and mechanical advantage. You’ll see how these concepts directly relate to human movement, with examples like elbow flexion, heel raise, and head nodding. This video is especially helpful for physiotherapy students, clinicians revising biomechanics, and anyone preparing for exams.

What you’ll learn?

  1. What Is a Lever?
  2. Components of a Lever
  3. Levers in the Human Body
  4. Types of Levers
  5. First-Class Lever
  6. Second-Class Lever
  7. Third-Class Lever
  8. Mechanical Advantage
  9. Angle of Pull
  10. Efficiency of Resistance 1
  11. Pulley Basics
  12. Fixed Pulley
  13. Movable Pulley