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Simple Machines

TermDefinition
Simple Machines redirect energy by manipulating force, distance, and speed
Mechanical Advantage Formula magnitude of resistance force/magnitude of effort force
Lever MA Formula length to effort/length to resistance
Class 1 Lever fulcrum is between the load and effor
Class 2 Lever load is between the effort and fulcrum
Class 3 Lever effort is between the load and fulcrum
Moment Formula force x distance
Moment Equilibrium E*Le=R*Lr
IMA Formula De/Dr
Pulley used to change the direction and magnitude of a force
Pulley MA the number of strands (only count last strand if it points up)
AMA Formula Fr/Fe
GR Formula n out/n in=d out/d in= w in/w out=t out/t in
n (gears) number of teeth
d (gears) diameter
w (gears) angular velocity (speed)
t (gears) torque
Idler Gear a gear train is defined as the gear placed between the input and output shafts (between the drive gear and the driven gear). For example, it is used to change the rotational direction of the output shaft
Inclined Plane IMA L/H (length/height)
Wedge IMA L/T (distance traveled by effort/distance traveled by resistance)
Screw IMA Circumference (2πre)/pitch (P)
Pitch 1/threads per inch
Solar Energy inexhaustible energy source
Parallel Circuit voltage is always the same
Series Circuit current is always the same
Created by: rcooke
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