Photo AI
Figure 5 shows a performer during a weight training session - Edexcel - GCSE Physical Education - Question 5 - 2019 - Paper 1
Question 5
Figure 5 shows a performer during a weight training session. (a) Identify the class of lever system in use when the performer moves from standing onto her toes in F... show full transcript
Worked Solution & Example Answer:Figure 5 shows a performer during a weight training session - Edexcel - GCSE Physical Education - Question 5 - 2019 - Paper 1
Step 1
Identify the class of lever system in use when the performer moves from standing onto her toes in Figure 5.
Answer
The class of lever system in use when the performer moves from standing onto her toes is a second class lever. In this scenario, the effort is applied between the load (the body weight) and the pivot (the ball of the foot).
Step 2
Give another example of the use of this lever system, at the ankle, in a sporting situation of your choice.
Answer
An example of the use of this lever system at the ankle can be seen in a high jump at take-off. The athlete uses the ankle joint as a pivot point to propel their body upwards, applying force through the feet.
Step 3
Define the meaning of the term mechanical advantage.
Answer
Mechanical advantage refers to the benefit of using a lever system, which allows a load to be moved with relatively small muscular effort. This means that less force is required to lift or move the weight, making the action more efficient.