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Mechanical
Formulas
- Mechanical Advantage = Load/Effort
- Velocity Ratio
- Gears = Number of teeth driven /
Number of teeth driver
- Compound Gears
- Gear Ratio = (Number of teeth on B / Number of teeth on A) x
(Number of teeth of D / Number of teeth on C)
- Gear Ratio = (Number of teeth on B / Number of teeth on A) x
(Number of teeth of D / Number of teeth on C)
- Pulleys = Diameter of
driven pulley / Diameter of
driver pulley
- Chain and Sprocket = Number of teeth
driven sprocket / Number of teeth driver
sprocket
- Levers = Distance moved by
effort / Distance moved by
load
- Gears = Number of teeth driven /
Number of teeth driver
- Efficiency = Mechanical
Advantage / Velocity
Ratio
- Force (N) x Distance (Metres) =
Torque (Nm)
- Input Torque =
Turning Force x
Pulley Radius
- Output Torque = Input Torque x
Velocity Ratio
- In rotary systems the
turning effect of a force is
known as torque
- Input Torque =
Turning Force x
Pulley Radius
- Moment of a force =
Force x Perpendicular
Distance
- A moment is a turning
force
- Clockwise Moments =
Anticlockwise Moments
- A moment is a turning
force
- Potential Energy = Mass of object x
Acceleration of gravity (9.8 m/s2) x
Height of object
- Kinetic Energy = half
mass (1/2) x velocity
squared
- Power = Work Done / Time
Taken
- Watt: The unit of
power. 1 watt = 1 joule
per second
- Power (Watts) = Torque (Nm) x
Angular Velocity (Rad/s)
- Watt: The unit of
power. 1 watt = 1 joule
per second
- Output Speed =
Input Speed /
Velocity Ratio
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