levers

Question 1

What is the three parts of a lever

Answer 1

Effort, Fulcrum, Load

Question 2

First Class Lever has what in the middle

Answer 2

Fulcrum

Question 3

Second lever has what in the middle

Answer 3

Load

Question 4

Third Class Lever has what in the middle

Answer 4

Effort

Question 5

What is a lever

Answer 5

A system of bones and muscles working together to help you move

Question 6

What are the different classes of levers

Answer 6

• First class lever
• Second class lever
• Third class lever

Question 7

Sporting example of first class lever

Answer 7

Rowing : the oar acts as the load, the arms act as the effort and the water acts as the load

Question 8

Sporting example of second class lever

Answer 8

Calf raises

Question 9

Sporting example of third class lever

Answer 9

Tricep curl

Question 10

Advantages of first and second class lever

Answer 10

• Stable
• Strong
• Increasing the length of lever arm increases the mechanical advantage

Question 11

Advantage of third class lever

Answer 11

• Fast movement
• Large range of motion
• Increasing lever arm decreases mechanical advantage

Question 12

Disadvantages of first and second class levers

Answer 12

• slow

- limited flexibility

Question 13

Disadvantages of third class levers

Answer 13

The force applied must exceed the load

Question 14

What do the parts of a lever represent

Answer 14

Effort : Muscles
Lever Arm : Bones
Load : Resistance/Weights
Fulcrum : Joints