Levers (AQA GCSE Design and Technology): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
Three essential parts of every lever
Three essential parts of every lever
Effort, pivot (fulcrum), and load
The effort in a lever system
The effort in a lever system
Input force applied to operate the lever
The pivot (fulcrum) in a lever
The pivot (fulcrum) in a lever
Fixed point around which the lever rotates
The load in a lever system
The load in a lever system
Output force or resistance the lever works against
First order lever arrangement
First order lever arrangement
Pivot sits between effort and load
Examples of first order levers
Examples of first order levers
Crowbars, scissors, see-saws, claw hammers
Second order lever arrangement
Second order lever arrangement
Load sits between pivot and effort
Examples of second order levers
Examples of second order levers
Wheelbarrows and nutcrackers
Third order lever arrangement
Third order lever arrangement
Effort sits between pivot and load
Purpose of third order levers
Purpose of third order levers
Precision and control, not force multiplication
Examples of third order levers
Examples of third order levers
Tweezers and fishing rods
Mechanical advantage formula
Mechanical advantage formula
Load force ÷ effort force
Lever balance principle equation
Lever balance principle equation
Load force × load distance = effort force × effort distance