Moments Flashcards
What is the moment of a force?
Its turning effect
How do you work out the size of a moment?
force X perpendicular distance from pivot
What are moments measured in?
Newton-metres
When are moments balanced, meaning an object does not turn?
When the clockwise and anticlockwise moments match
Does increasing the length of a lever increase or decrease the force needed to pull it?
Decrease
When does a seesaw balance?
When force X distance = force X distance
When an object topples, what is the moment caused by?
The object’s weight
What is turning force?
The force that acts to produce rotation from a pivot
If the distance from the pivot increases, what happens to the turning force?
It increases
As force increases, what happens to the moment?
It increases
What is the relationship between the perpendicular distance and the force?
They are proportional - they increase and decrease at the same rate
When something is balanced around a pivot, what are the clockwise and anticlockwise moments?
Equal
