- Window blinds - Window blinds - Clothesline
The load is in the center
- make it easier to pull a rope - change direction of a force - get more mechanical advantage
Fulcrum
Fixed and movable pulley
How much easier and faster a machine makes your work.
Crane, weight training machines
true
Movable pulley
One wheel, which is attached to something high
Movable pulley
Fulcrum,load,effort
A pulley
is a wheel with two raised edges so that a rope or a string will run along the wheel without coming off.
less
true
fixed pulley
The amount of force used to move a load
Yes
True
True
true
the weight of an object that is being moved
What is one example of a movable pulley?
If you wanted to carry bricks what simple machine would you use?
Define lever effort
Explain what a pulley is- Include the parts of a pulley
Scissors and a teeter- totter are class 1 levers, true or false?
Define load
What are the two types of pulley?
Pulleys can be fixed or movable. Which kind of pulley reduces the effort needed to life the load?
True or False: In a class 1 lever system the fulcrum is in the middle?
Why is a wheelbarrow and a nutcracker examples of class two levers?
What are the three parts of a lever?
Do you have a mechanical advantage when using a fixed pulley or movable pulley?
What kind fo pulley can be used to bring a bucket of water up and down from a tree house?
A golf club and tweezers are examples of a class 3 lever ,true or flase?
In a class 3 lever system the effort is in the middle, true or false?
In a class 2 lever system is the lever in the middle? Yes or No
What are two ways pulleys can make life easier
The pivot or turning point of a lever is called?
What is mechanical advantage?
Name two examples of a fixed pulley
The more wheels you use, the less/more force you have to use to lift and object?
A single fixed pulley system has.. how many wheels and what is it attached to?
In a class 1 lever system the fulcrum is in the middle, true or false?
