Lever systems

Figure 6 shows the take off phase as a gymnast completes a vault.

Use Figure 6 to help answer the following questions.

Identify the class of lever system used at the ankle whilst taking off in a gymnastic vault in Figure 6.

Draw a fully labelled diagram to show the class of lever identified in Question 23.1.

Define balance.

Justify the importance of balance for a gymnast.

Figure 5 shows a netball player in two different positions (A and B) as they perform a throw.

Use Figure 5 to help answer the following questions.

Identify the class of lever system used at the elbow as it moves from A to B.

Draw a fully labelled diagram to show the class of lever identified in Question 18.1.

Figure 3 shows a person performing a back squat.

Identify the class of lever system used at the knee whilst performing the back squat in Figure 3.

Draw a fully labelled diagram to show the class of lever identified in Question 15.1.

Explain why the lever in Figure 3 has a low mechanical advantage.

Figure 5 shows a shot putter in two different positions (A and B) as they release the shot.

Identify the class of lever used at the elbow as it moves from A to B.

Draw a fully labelled diagram to show the class of lever identified in Question 15.1.

Name two bones located at the ankle.

Figure 3 shows a swimmer in two different positions (A and B) as they perform a dive.

Use Figure 3 to help you answer Question 16.2.

Identify the class of lever used at the ankle as shown in Figure 3.

Draw a fully labelled diagram to show the class of lever identified in Question 16.2.

Figure 2 shows an individual performing a push-up.

Using Figure 2, identify what type of muscle contraction is taking place in the arms during the downward phase (A to B) of the push-up.

Using Figure 2, identify the main agonist in the arm during the downward phase (A to B) of the push-up.

Using Figure 2, identify the lever system working at the elbow during the upward phase (B to A) of the push-up.

Draw a fully labelled diagram in the box below to show the type of lever identified in your answer to Question 07.3.