Flashcards in Design And Technology- Pulleys Deck (11):
A simple machine that uses grooved wheels and rope to raise, lower, or move a load.
Two or more pulleys that creates mechanical advantage
Weight of an object
The amount of force required to lift or move this object
As you add more pulleys
You increase your mechanical advantage and it becomes very easy to lift the same load.
Amount of pulleys in a compound pulley =
Mechanical advantage =
1 tone =
Velocity ratio (speed)
Diameter of driven pulley/ diameter of driver pulley
Diameter of driven pulley
Velocity ratio x diameter of driver gear