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Science > Simple Machines > Flashcards

Simple Machines Flashcards

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1
Q

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

A

Distance

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2
Q

What class lever is your arm or jaw?

A

3rd class

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3
Q

What is the stiff structure that rotates around a point?

A

A fulcrum

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4
Q

What is the force applied to a lever called?

A

The input force

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5
Q

What is the force applied to the load called?

A

The output force

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6
Q

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

A

The input arm

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7
Q

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

A

The output arm

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8
Q

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

A

The forces are equal

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9
Q

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

A

3rd class

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10
Q

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

A

2nd class

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11
Q

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

A

1st class

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12
Q

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

A

1

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13
Q

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

A

Machine

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14
Q

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

A

2nd class

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15
Q

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

A

3rd class

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16
Q

Fulcrum

A

Stiff structure that separates the input force and output force

17
Q

Input

A

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

18
Q

Input arm

A

Side of lever in which input force is applied

19
Q

Input force

A

Force that is applied to a machine

20
Q

Lever

A

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

21
Q

Machine

A

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

22
Q

Mechanical advantage

A

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

23
Q

Output

A

Force energy or power provided by machine

24
Q

Output arm

A

Side of lever that lifts the load

25
Q

1st class lever

A

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

26
Q

2nd class lever

A

Output force is in middle (FOI)

Input

27
Q

3rd class lever

A

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

28
Q

Output force

A

Force that is provided by a machine

29
Q

Pulley

A

A simple machine that can increase force by changing the distance

30
Q

Simple machine

A

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

Science (11 decks)

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