Design And Technology- Pulleys Flashcards
1
Q
Pulley
A
A simple machine that uses grooved wheels and rope to raise, lower, or move a load.
2
Q
Compound pulley
A
Two or more pulleys that creates mechanical advantage
3
Q
Load
A
Weight of an object
4
Q
Effort
A
The amount of force required to lift or move this object
5
Q
As you add more pulleys
A
You increase your mechanical advantage and it becomes very easy to lift the same load.
6
Q
Amount of pulleys in a compound pulley =
A
Mechanical advantage
7
Q
Mechanical advantage =
A
Load/ effort
8
Q
1 tone =
A
1000kg
9
Q
Velocity ratio (speed)
A
Diameter of driven pulley/ diameter of driver pulley
10
Q
Diameter of driven pulley
A
Velocity ratio x diameter of driver gear
11
Q
Diameter of driver gear =
A
Diameter of driven gear/ velocity ratio
