Soc20 Levers

Question 1

What is a Lever

Answer 1

The term Lever refers to a system of muscles and bones working together to bring about movement,When exercising your muscles pull on bones and your bones create movement acting as levers.

Question 2

How does a lever work?
(The four components)

Answer 2

1)Fulcrum- (Or Pivot)-The point around which the lever rotates (joints)

2) Load - the force that is applied by the lever system
(resistance/ object).

3) Effort - a force that is applied by the user of the lever
system (muscles).

4) Lever arm - a rigid bar such as a bone.

Question 3

Three types of levers

Answer 3

First class
second class
third class

Question 4

Examples of a first class lever

Answer 4

A tricep dip or nodding your head

Question 5

Examples of a second class lever

Answer 5

Calf raises and a wheelbarrow

Question 6

Examples of a third class lever

Answer 6

A bicep curl and using a spade

Question 7

What is a fulcrum

Answer 7

Fulcrum - (or pivot) - the point around which the lever
rotates (joints).

Question 8

What is the load?

Answer 8

Load - the force that is applied by the lever system
(resistance/ object).

Question 9

What is the effort?

Answer 9

Effort - a force that is applied by the user of the lever
system (muscles).

Question 10

What is a lever arm?

Answer 10

Lever arm - a rigid bar such as a bone.

Question 11

What word do we use to remember the order of which part of the lever is in the middle

Answer 11

FLE

Question 12

What is a Mechanical Advantage

Answer 12

It is a large load that can be lifted with a relatively small amount of effort

When the effort arm is longer than the load arm

Question 13

Formula of Mechanical Advantage

Answer 13

Effort Arm/ Resistance Arm