Moments, Levers and gears Flashcards
What is a moment and how do they act?
The turning effect of a force that act around a point in a clockwise or anti-clockwise direction
Where is the point usually?
The pivot(fulcrum)
What is perpendicular distance?
The distance from the pivot to the line of action
What happens if an object is balanced?
The total clockwise movement is equal to the total anti-clockwise movement around a pivot
What type of lever are scissors?
Effort-pivot-load
What type of lever is a wheelbarrow
Pivot-load-effort
What type of lever is tweezers?
Pivot-effort-load
What happens if the lever is longer and further away from the pivot?
More greater force is applied on load making it easier
How do gears rotate?
The teeth move in the same direction but the gears rotate in opposite directions
What happens if the driven gear is larger?
It will rotate slowly with greater moment
What happens if the driven gear is smaller
It will rotate quickly with smaller moment
