Levers & Gears (AQA GCSE Physics): Flashcards
📚Flashcards
Practise the cards
12 cards from this deck
ShowHide
Practise the cards
12 cards from this deck
Purpose of levers & gears
Purpose of levers & gears
Reduce force/effort needed to turn objects
How levers increase turning effect
How levers increase turning effect
Force acts farther from pivot
What is the pivot in a lever?
What is the pivot in a lever?
Point the lever turns around
When is moment greatest on a lever?
When is moment greatest on a lever?
When force applied at right angle (perpendicular)
Effect of longer spanner on moment
Effect of longer spanner on moment
Increases the moment
Effect of longer spanner on force needed
Effect of longer spanner on force needed
Decreases force needed
What can gears change?
What can gears change?
Speed, force, or direction
1st gear to smaller gear: speed effect
1st gear to smaller gear: speed effect
Second gear turns faster
1st gear to smaller gear: force effect
1st gear to smaller gear: force effect
Less force
1st gear to larger gear: speed effect
1st gear to larger gear: speed effect
Second gear turns slower
1st gear to larger gear: force effect
1st gear to larger gear: force effect
More force
Direction of 2nd gear vs 1st gear
Direction of 2nd gear vs 1st gear
Always opposite direction