Simple Machines
Friction
Gravity/Pressure
Pressure
Work/Energy/Machines
100
These determine the MA of a pulley system
What is the number of ropes at the bottom of the pulley
100
This is the "sticky" form of friction which requires the most force to overcome.
What is sliding friction?
100
This is the Metric unit for weight.
What is Newton?
100
This is the general term for the force in fluids that opposes gravity.
What is buoyancy?
100
This is the unit equal to one Newton-meter.
What is a joule?
200
This ratio determines the MA of a wheel and axle
What is wheel/axle?
200
General term for the force that opposes motion.
What is friction?
200
This is the equation for pressure
What is f/a?
200
This is the term for the fluid friction encountered by airplanes
What is drag?
200
This is a number without units that describes how a machine makes work easier.
What is mechanical advantage?
300
These two factors determine the MA of a ramp
What is length/height?
300
These are the three factors which affect the amount of sliding friction.
What are mass, texture, and area?
300
This is the equation for weight.
What is wt = mg?
300
This principle states that a fast moving fluid results in lower pressure.
What is Bernoulli's Principle?
300
This is a percentage which indicates the loss of work due to friction.
What is efficiency?
400
This is the class of lever which only multiplies force without a change of direction
What is 2nd class?
400
These are two ways to change sliding friction to rolling friction.
What are wheels and ball bearings?
400
These are the two factors that must balance to form an orbit and these two faactors affect the pull of gravity on objects.
What are inertia and gravity and mass and distance?
400
This principle describes buoyant forces in fluids.
What is Archimedes' Principle?
400
This is the metric unit for power.
What is watt?
500
This class of lever can only multiply distance
What is 3rd class?
500
This is the form of energy caused by friction.
What is heat?
500
This is the acceleration die to gravity at the earth's surface.
What is 9.8 m/s^2
500
This is the device that transfers (not multiplies) force using fluid pressure.
What is a force pump?
500
This is the term for the true mechanical advantage of a machine.
What is AMA?
M
e
n
u