Quiz Complete, well Done!
Pulleys are simple machines that help to lift heavy objects. They work by applying a force over a
.
The main advantage of using pulleys is that they can help to reduce the amount of
needed to lift an object.
Load
A movable pulley changes both the direction of the force and the amount of force needed to lift an object. This makes it an example of a
.
Which type of pulley has a moveable wheel?
Compound pulley
Mechanical advantage
Pulley
A fixed pulley changes the direction of the force needed to lift an object, but does not change the amount of
needed.
Tackle
Movable pulley
How does increasing the number of pulleys in a system affect the effort required?
Which of the following is not a type of pulley?
Pulley system
Using multiple pulleys in a system can provide a greater mechanical advantage, but it also means that the distance the rope needs to be pulled is
.
A block and tackle system uses multiple pulleys to provide an even greater
for lifting heavy objects.
What is the main purpose of a pulley?
Fixed pulley
What is the advantage of using a pulley system?
