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Year 10 Physics 🌸 > Machines > Flashcards

Machines Flashcards

1
Q

What do machines do?

A

Multiply force or distance (ie. make a task easier)

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2
Q

What are levers made up of?

A

Fulcrum/pivot, load and effort

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3
Q

What is in the middle of a type 1 lever?

A

Fulcrum/pivot

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4
Q

What is in the middle of a type 2 lever?

A

Load

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5
Q

What is in the middle of a type 3 lever?

A

Effort

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6
Q

What is a moment?

A

A turning force

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7
Q

What are the units for moments?

A

Nm/Ncm/Nmm etc.

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8
Q

What is the equation for moments?

A

Moment = Force x Distance

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9
Q

What is the equation for force?

A

Force = Moment/Distance

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10
Q

What is the equation for distance?

A

Force = moment/force

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11
Q

What two directions do moments exist in?

A

Clockwise and anti-clockwise

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12
Q

What do levers need to have?

A

Equal moments (ie force x distance = force x distance)

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13
Q

What is equilibrium?

A

It is when moments are equal

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14
Q

What do gears do?

A

They transfer forces and motion from one object to another

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15
Q

What is it called when gears are touching?

A

They are meshed together

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16
Q

What is it called when 3 or more gears are together?

A

A gear train

17
Q

What do gears turn on?

A

An axel

18
Q

What can a gears change?

A

Speed and direction

19
Q

What is it called when gears meet at an angle?

A

Bevel gears

20
Q

What is it called when gears use screws?

A

A worm gear

21
Q

In a single pulley what is load equal to?

A

The force applied

22
Q

How many strings does a single pulley have?

A

1

23
Q

How far do you have to pull the string on a single pulley to lift the load 10cm?

A

10cm (1:1)

24
Q

What is the ratio of two single pulleys?

A

2:1

25
Q

What is the ratio of a double and single pulley?

A

3:1

26
Q

What is the ratio of two double pulleys?

A

4:1

27
Q

What is the equation for pulleys?

A

Load x distance lifted = effort x distance pulled

28
Q

What is the most important rule for energy?

A

Energy can not be created or destroyed only changed from one form to another

Year 10 Physics 🌸 (2 decks)

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