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Identify what class of lever operates at the elbow when throwing the javelin as shown in Figure 3 - Leaving Cert Physical Education - Question 5 - 2020
Question 5
Identify what class of lever operates at the elbow when throwing the javelin as shown in Figure 3. Class Draw the lever system identified by you in question 5 (a).... show full transcript
Worked Solution & Example Answer:Identify what class of lever operates at the elbow when throwing the javelin as shown in Figure 3 - Leaving Cert Physical Education - Question 5 - 2020
Step 1
Identify what class of lever operates at the elbow when throwing the javelin
Answer
The lever system operating at the elbow during the javelin throw is classified as a first-class lever. In this system, the fulcrum is positioned between the effort applied by the triceps and the load, which is the weight of the javelin.
Step 2
Draw the lever system identified by you in question 5 (a)
Answer
In the figure, the following parts of the lever system need to be labeled:
- Effort: This is applied by the triceps muscle when straightening the arm to throw the javelin.
- Load: This is the weight of the javelin, which needs to be lifted.
- Fulcrum: This is the elbow joint, acting as the pivot point for the lever system.
The diagram illustrates these components in the context of the athlete throwing the javelin.