Question

The motion of standing on tiptoe uses a _____ lever system?

1) First-class
2) Second-class
3) Third-class
4) Cannot be determined

Answer 1

Standing on tiptoe uses a second-class lever system, where the ball of the foot acts as the fulcrum, calf muscles provide effort, and the body weight acts as load.

Step-by-step explanation:

The motion of standing on tiptoe is a biomechanical action that uses a lever system within the musculoskeletal structure of the body. The type of lever system utilized when standing on tiptoe is a second-class lever. In this system, the ball of the foot serves as the fulcrum, the effort is applied by the calf muscles (specifically the gastrocnemius and soleus muscles), and the load is represented by the body's weight acting through the bones of the leg. The resistance (body weight) is positioned between the fulcrum (ball of the foot) and the effort (calf muscles), which is characteristic of a second-class lever.