David González Arroyo
MECHANISMS
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Mechanisms
David Profe de tecno
Created on March 5, 2022
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Transcript
David González Arroyo
MECHANISMS
Classes of levers
Second Class
Third Class
First Class
Law of the lever
MA = R / F
F · D F = R ·DR
Mechanical advantage
Law
Pulleys
F = R / n
F = R / 2
F = R
Movable
Compound
Fixed
Friction Wheels
Belt
Train
In contact
Law of the wheels
Ratio = N2 / N1
N1 · D 1 = N2 · D2
Ratio
Law
Cogwheels
Chain
Train
In contact
Law of the cogwheels
Ratio = N2 / N1
N1 · Z 1 = N2 · Z2
Ratio
Law
Crankshaft
Cam
Worm and worm gear
Crank and slider
Bevel gears
Screw and nut
Rack and pinion
Other mechanisms