Levers

Question 1

What phrase is used to remember the Levers?

Answer 1

FLE —> 123

Question 2

What is the first-class lever?

Answer 2

The Fulcrum (pivot) is between the effort and load

Question 3

Give an example of where the first-class lever is used around the bogy

Answer 3

Head

When the head and neck are being flexed like nodding

Question 4

Give a sporting example of when a first-class lever is used

Answer 4

Header in football

Question 5

What shape is the load in a diagram?

Answer 5

Square (box)

Question 6

What shape is the fulcrum in a diagram?

Answer 6

Triangle

Question 7

What shape is the effort in a diagram?

Answer 7

Arrow

Question 8

What is the second class lever?

Answer 8

The load is in between the fulcrum and the effort

Question 9

Give an example of where the second class lever is used around the body

Answer 9

Toes

Question 10

Give a sporting example of where the second class lever is used

Answer 10

Netballer defending in netball

Question 11

What is the third class lever?

Answer 11

The effort is inbetween the fulcrum and the load

Question 12

Give an sporting example of where the third class lever is used

Answer 12

A boxer performing a bicep curl

Question 13

What is special and ineffecent in a third class lever?

Answer 13

In terms of applying force this is a very inefficient lever but it allows speed and a range of movement

Question 14

Does the first class lever have a high or low mechanical advantage?

Answer 14

LOW

Question 15

Why does the first class lever have a low mechanical advantage?

Answer 15

Because the lever arm is longer than the effort

Question 16

How can the first class lever have a high or low mechanical advantage?

Answer 16

depending on whether or not the fulcrum id closer to the load or effort

Question 17

What is mechanical advantage?

Answer 17

A way of measuring the effecenty of the lever (bone)

Question 18

How do you calculate mechanical advantage?

Answer 18

Effort arm / Load arm

Question 19

What is the distance from the load to the fulcrum?

Answer 19

Load arm / Resistance arm

Question 20

What is the distance fromthe effort to the fulcrum known as?

Answer 20

Effort Arm

Question 21

When a lever’s effort arm is longer than its load arm it is said to have a what?

Answer 21

High mechanical advantage

Question 22

Does the second class lever have a high or low mechanical advantage?

Answer 22

HIGH

Question 23

Why does the second class lever have a higher mechanical advantage?

Answer 23

Because the effort arm is always longer than the load arm

Question 24

Does the hird class lver have a high or low mechanical advantage?

Answer 24

LOW

Question 25

Why doe sthe third class lever have a low mechanical advantage?

Answer 25

Because the effort ar is shorter than the load arm

Question 26

What are third class levers to do?

Answer 26

Theyre able to increase the distance covers and speed at the end of the lever arm helping with many sporting movements