Levers
Pulleys
Incline Plane
Wheel and Axle/ Screw
MA / ME
100
Lever that has the fulcrum in the middle.
What is a first class lever?
100
This type of pulley does not move with the load.
What is a fixed pulley?
100
____ force is the force that you do on a machine.
What is effort?
100
An incline plane wrapped around a cylinder.
What is a screw?
100
______ = output force divided by input force
What is mechanical advantage?
200
The fixed point on a lever.
What is a fulcrum?
200
This type of pulley has both fixed and movable pulleys.
What is a compound pulley?
200
When you _________ the distance, you _________ the force needed for work.
What is increase and decrease?
200
The ___ the incline plane the closer the threads on a screw.
What is longer?
200
By comparing the _____ of two machines, you can tell which makes work easier.
What is mechanical efficiency?
300
For a smaller mass to balance a larger mass on the opposite side of a lever, the smaller mass must be ______ from the fulcrum.
What is farther?
300
This type of pulley moves with the load.
What is a movable pulley?
300
If you increase the effort force the work will _________.
What is stay the same or not change?
300
For the a wheel and axle, the ________ should be larger to make work easier.
What is wheel?
300
Actual MA is always ___ than ideal MA.
What is less?
400
__________ = weight of washers times distance
What is torque?
400
The higher the number of these, the easier the work will be with a pulley.
What is are rope segments?
400
__________ = rise/run
What is slope?
400
Hydraulics use Pascal's Principle because liquids do what?
What is expand evenly in all directions?
400
Perpetual motion is impossible because of ___.
What is friction?
500
This type of lever has the load in the middle.
What is a second class lever?
500
Which type of pulley decreases the amount of effort force you will have to use: fixed or movable pulley?
What is a movable pulley?
500
Higher the slope of an incline plane, the more _____ you will need to use to complete the work needed to lift a cart.
What is effort force?
500
A knife is this type of simple machine.
What is a wedge?
500
_____ = (work output / work input) x 100%
What is ME?
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