A ________________________ change the direction of the effort.
Single Fixed Pulley
100
In its regular use a flyswatter in its regular use is which type of lever?
What is a class 3 lever
100
Which single pulley gives a mechanical advantage?
A Single Movable Pulley
100
Which pulley does NOT give an advantage by reducing effort?
Pulley A - single fixed, it gives a directional advantage
200
A lever in which the load is in between the fulcrum and the effort.
What is a class 2 lever?
200
In a lever system, the farther from the fulcrum the effort is applied, the greater the ______________ to the user.
advantage
200
Fill in the blank, "In a class 2 lever, the effort required to lift the load is equal to or __________________ than the weight of the load."
Hint: What type of advantage does a class 2 lever always give?
What is less
200
Which pulley gives both a mechanical advantage and a directional advantage?
Single Fixed/Single Movable Effort Down
200
If you wish to lift the load 10 cm, how far should you pull up the rope?
30 m
300
On a spring, the long dark lines represent this.
What is 1 newtown.
300
The closer the ______________ is to the fulcrum, the easier it is to lift.
load
300
In a class 1 lever, more effort is needed t lift a load as the load moves ____________________ from the fulcrum.
What is away
300
Of the 4 pulley types we learning about, which gives the greatest mechanical advantage?
Single Fixed/Single Movable Effort Up
300
These children weigh exactly the same. Circle the picture that best shows how the teeter totter would look when they stop moving.
Picture B - the load is closest to the fulcrum in B, making it feel the lightest
400
On a spring scale each lighter, smaller line represents this.
What is .2 of a newton.
400
The _________________ supporting the load in a pulley system, the less effort needed to lift the load.
more ropes
400
Name something all levers have in common.
Explain how levers are different from each other.
They all have a fulcrum, load, and effort.
Difference is the location of these three elements.
Another difference is the type of advantage each gives.
400
How you determine the amount of mechanical advantage a pulley system provides?
Determine the amount of supporting ropes and divide the load by the number of supporting ropes.
400
Which picture shows how the see saws would look when they stop moving.
Picture A
500
This is the pivot point in a lever system.
What is the fulcrum.
500
A two pulley system with the effort applied _________________ gives a greater mechanical advantage.
up
500
What class lever are all three of the following items: scissors, pliers, and a teeter totter?
Class 1 Lever
500
How would you determine how much rope you need to pull to lift a load 5cm?
Figure out the the amount of supporting ropes and multiple the distance you want to move the load by that number.