Turning Forces And Levers And Gears Flashcards Preview

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Flashcards in Turning Forces And Levers And Gears Deck (17)
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1
Q

What is another name for a turning effect of a force?

A

A moment

2
Q

A force can make an object turn ______________ or ____________________

A

Clockwise

Anti-clockwise

3
Q

The turning effect of a force depends on the ___________ from the ________

A

Distance

Pivot

4
Q

What 3 things do levers need?

A

Fulcrum
Effort
Load

5
Q

Describe a Class 1 lever

A

The load and the effort are on the opposite sides of the fulcrum

6
Q

What is an alternative name for the fulcrum?

A

Pivot

7
Q

Describe a Class 2 lever

A

The load is between the effort and the fulcrum

8
Q

Describe a Class 3 lever

A

The effort is between the load and the fulcrum

9
Q

Give an example of a Class 1 lever

A

See-saw
Scissors
Crowbar

10
Q

Give an example of a Class 2 lever

A

Wheelbarrow

Nutcracker

11
Q

Give an example of a Class 3 lever

A

Tweezer

Human jaw

12
Q

When a lever acts as a ________ _____________ it may seem that we’re getting more __________ than we started with

A

Force multiplier

Energy

13
Q

The work done by the ___________ is the same as the work done by the __________

A

Effort

Load

14
Q

To move a heavy object a short distance, a ________ force moves the lever through a ___________ distance

A

Small

Longer

15
Q

When 2 or more gears are connected the gear ratio will determine how _______ each cog spins and the ___________ required

A

Fast

Force

16
Q

What is a gear ratio?

A

The relative number of teeth on each cog

17
Q

When a gear is turned directly by an adjacent cog it will rotate in the _______________ direction

A

Opposite