Types Of Levers 2.1

Question 1

Lever definition

Answer 1

Rigid bar that turns about an axis

Question 2

What do all levers have

Answer 2

Fulcrum, load and effort

Question 3

Fulcrum definition

Answer 3

Fixed point at which a lever turns (aka axis)

Question 4

Load definition

Answer 4

The weight/resistance a lever must move

Question 5

Effort definition

Answer 5

Force required to move the load

Question 6

What is the fixed point at which a lever turns

Answer 6

Fulcrum

Question 7

What is the weight/resistance that the lever must move

Answer 7

Load

Question 8

What is the force required to move the load

Answer 8

Effort

Question 9

What class lever has the fulcrum in the middle

Answer 9

First class

Question 10

What does a first class lever have in the middle

Answer 10

Fulcrum

Question 11

What class lever has the load in the middle

Answer 11

Second class

Question 12

What is in the middle of a second class lever

Answer 12

Load

Question 13

What is in the middle of a third class lever

Answer 13

Effort

Question 14

What class lever has the effort in the middle

Answer 14

Third class

Question 15

Remembering the class of levers

Answer 15

1 F
2 L
3 E

Question 16

Load arm definition

Answer 16

Distance from the load to the fulcrum

Question 17

Distance from the load to the fulcrum

Answer 17

Load arm

Question 18

Effort arm definition

Answer 18

Distance from effort to fulcrum

Question 19

Distance from effort to fulcrum

Answer 19

Effort arm

Question 20

How to calculate mechanical advantage

Answer 20

Mechanical advantage = effort arm / load arm

Question 21

What is calculated by effort arm / load arm

Answer 21

Mechanical advantage

Question 22

When is a lever said to have high mechanical advantage

Answer 22

When effort arm is longer than load arm

Question 23

When is a lever said to have low mechanical advantage

Answer 23

When load arm is longer than effort arm

Question 24

What class levers always have high mechanical advantage

Answer 24

Second class levers

Question 25

What class lever always has a low mechanical advantage

Answer 25

Third class levers

Question 26

What class lever can have either a high or low mechanical advantage

Answer 26

First class levers

Question 27

What type of mechanical advantage does a second class lever have

Answer 27

High mechanical advantage

Question 28

What type of mechanical advantage does a third class lever have

Answer 28

Low mechanical advantage

Question 29

What type of mechanical advantage does a first class lever have

Answer 29

High or low mechanical advantage

Question 30

What can levers with high mechanical advantage do (2)

Answer 30

• move large loads

- relatively low effort

Question 31

What can levers with a low mechanical advantage do (3)

Answer 31

• increase distance covered
• increase the speed at the end of arm
• larger range of movement with low effort