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GCSE PE > SOC 20 > Flashcards

SOC 20 Flashcards

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1
Q

What is a lever?

A

A lever is a structure that has four components.

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2
Q

What is the fulcrum in a lever?

A

The fulcrum (or pivot) is the point around which the lever rotates.

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3
Q

What is the load in a lever system?

A

The load is the force that is applied by the lever system.

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4
Q

What is the effort in a lever system?

A

The effort is a force that is applied by the user of the lever system.

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5
Q

What is the lever arm?

A

The lever arm is a rigid bar such as a bone.

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6
Q

What shape does the fulcrum represetn?

A

Triangle

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7
Q

What shape does the load represent?

A

Square

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8
Q

What shape does the lever represent?

A

Upwards arrow

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9
Q

What shape does the lever arm?

A

Rectangle

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10
Q

What shape does the lever arm?

A

Rectangle

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11
Q

Whats in the middle for the First class lever

A

Fulcrum

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12
Q

Whats in the middle for the Second class lever?

A

Load

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13
Q

Whats in the middle for the third class lever?

A

Effort

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14
Q

Examples of First class levers

A

Tricep dip,nodding your head

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15
Q

Examples of second class levers

A

Claf raises,using a wheelbarrow

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16
Q

Examples of third class levers

A

Bicep curl,using a spade

17
Q

What is mechanical advantage?

A

A large load can be lifted with a relatively
small amount of effort.

18
Q

How does mechanical advantage work?

A

This happens when the output of the lever is greater
than the input - the load is greater than the effort, so
you are getting more out than you are putting in.

19
Q

What levers work at mechanical advantage?

A

First and second

20
Q

What is mechanical disadvantage?

A

cannot lift as heavy a load
with the same amount of effort, due to the position of
the effort and load from the fulcrum.

21
Q

How does mechanical disadvantage work?

A

This happens when the effort and the load are both the
same side of the fulcrum but the effort sits closer to the
fulcrum than the load does

22
Q

What lever works at mechanical disadvantag?

A

Third class

GCSE PE (18 decks)

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