Simple Machines

Question 1

What item must be sacrifices in order to have a larger output force than input force?

Answer 1

Distance

Question 2

What class lever is your arm or jaw?

Answer 2

3rd class

Question 3

What is the stiff structure that rotates around a point?

Answer 3

A fulcrum

Question 4

What is the force applied to a lever called?

Answer 4

The input force

Question 5

What is the force applied to the load called?

Answer 5

The output force

Question 6

What is the distance between the fulcrum and the input force called?

Answer 6

The input arm

Question 7

What is the distance between the fulcrum and the output force called?

Answer 7

The output arm

Question 8

What happens is the input and output arms are the same length and distance from the fulcrum?

Answer 8

The forces are equal

Question 9

What class is the input force greater than the output force?

Answer 9

3rd class

Question 10

Which class is the output force greater than the input force?

Answer 10

2nd class

Question 11

What class is the input and output forces equal in strength?

Answer 11

1st class

Question 12

If the lever is balanced, what is the mechanical advantage?

Answer 12

1

Question 13

A device with moving parts that works together to accomplish a task

Answer 13

Machine

Question 14

In what lever is the input force less than the output force?

Answer 14

2nd class

Question 15

In what class is the input force greater than the output force?

Answer 15

3rd class

Question 16

Fulcrum

Answer 16

Stiff structure that separates the input force and output force

Question 17

Input

Answer 17

Force energy or power supplied to make a machine accomplish a task

Question 18

Input arm

Answer 18

Side of lever in which input force is applied

Question 19

Input force

Answer 19

Force that is applied to a machine

Question 20

Lever

Answer 20

A simple machine that can be used to multiply force, multiply distance, or change the direction of a force. There are 3 classes.

Question 21

Machine

Answer 21

A device with moving parts that work together to complete a task

Question 22

Mechanical advantage

Answer 22

Ratio of output force divided by input force O/I

Or for levers length of input arm divided by length of output arm iA/oA

Question 23

Output

Answer 23

Force energy or power provided by machine

Question 24

Output arm

Answer 24

Side of lever that lifts the load

Question 25

1st class lever

Answer 25

Fulcrum in the middle (OFI)
Input force= Output force
Ex: see-saw

Question 26

2nd class lever

Answer 26

Output force is in middle (FOI)

Input

Question 27

3rd class lever

Answer 27

Input force in middle (FIO)
Input > Output
Ex: arm or jaw

Question 28

Output force

Answer 28

Force that is provided by a machine

Question 29

Pulley

Answer 29

A simple machine that can increase force by changing the distance

Question 30

Simple machine

Answer 30

Unpowered mechanical device that completes a task with 1 step/ movement