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