Levers in action | Physical education | Quizalize & Oak National Academy

Starter quiz

Which lever component would be in the middle of a first class lever system?

fulcrum ✓

load

effort

lever arm
Which shape represents the effort in a lever diagram?

line

triangle

square

arrow ✓
Match the lever system to the correct combination.

first class lever

⇔

EFL ✓

second class lever

⇔

FLE ✓

third class lever

⇔

LEF ✓
Which of the following diagrams is correct for second class lever?
In a second class lever, the effort arm is shorter than the ______ arm.

'load' ✓
Match the descriptions correctly.

effort arm

⇔

distance between the fulcrum and the effort ✓

load arm

⇔

distance between the fulcrum and the load ✓

mechanical advantage

⇔

move larger loads with relatively less effort ✓

Which lever system is being shown in the image?

first class lever

second class lever ✓

third class lever
Match the sporting action to the correct lever system.

first class lever

⇔

neck flexion ✓

second class lever

⇔

dorsiflexion of the ankle ✓

third class lever

⇔

flexion of the elbow ✓
Using football examples, match the sporting action to the correct lever system.

running towards the ball

⇔

second class lever ✓

heading the ball

⇔

first class lever ✓

striking the football with the laces

⇔

third class lever ✓
Which of the following is correct for the effort in a third class lever?

muscle origin

muscle insertion ✓

joint capsule

ligaments
Which of the following is correct description of the effort arm on a lever diagram?

the distance from the fulcrum to the load

the distance from the load to the effort

the distance from the fulcrum to the effort ✓
Mechanical disadvantage is described as 3rd class levers not able to lift as heavy loads, with the same amount of ...

'effort' ✓

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Sporting examples of a first class lever include the neck when heading the ball in football.
Sporting examples of a second class lever include plantar flexion at the ankle during a jump shot in basketball.
Sporting examples of a third class lever include flexion of the elbow in a bicep curl.

The effort in a lever starts in the belly of the muscle.

The effort from a muscle will start from the muscle insertion. The insertion is the tendon attached to the bone which that muscle moves.

First class lever - fulcrum is placed in the middle bewteen the load and effort
Second class lever - load is placed in the middle bewteen the fulcrum and effort
Third class lever - effort is placed in the middle between the load and effort
Mechanical disadvantage - 3rd class levers cannot lift as heavy loads with the same amount of effort as 2nd class levers due to the position of the effort and load from the fulcrum