GCSE PE: Levers

Which is an example of a 2nd class lever?

• The elbow during a bicep curl

• The knee during a high jump take off

• The ankle during a high jump take off

Name the lever used during flexion at the knee

• 1st class lever

• 2nd class lever

• 3rd class lever

What is an example of a 3rd class lever

• The knee during a long jump take off

• Heading a football

• Completing a calf raise

Name the lever used when pushing the head forward

• 1st class lever

• 2nd class lever

• 3rd class lever

Which is an example of a 1st class lever

• Jumping to catch a ball

• Heading a football

• Lunging

Define lever

• is a bone and is shown as a straight line

• is a pivot or joint and is shown as a triangle

• is a force provided by muscles and is shown by an arrow

• is the weight of the body/object being moved, it is shown as a square

Define fulcrum

• is a bone and is shown as a straight line

• is a pivot or joint and is shown as a triangle

• is a force provided by muscles and is shown by an arrow

• is the weight of the body/object being moved, it is shown as a square

Define effort

• is a bone and is shown as a straight line

• is a pivot or join and is shown as a triangle

• is a force provided by muscles and is shown by an arrow

• is the weight of the body/object being moved, it is shown as a square

Define load

• is a bone and is shown as a straight line

• is a pivot or joint and is shown as a triangle

• is a force provided by muscles and is shown by an arrow

• is the weight of the body/object being moved, it is shown as a square

Define mechanical advantage

• a large load can be lifted with a relatively small amount of effort

• levers cannot lift as heavy a load with the same effort, due to the position of the effort and load from the fulcrum