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73491
Mechanical Formulas
Description
1 Technology Mind Map on Mechanical Formulas, created by Jamie_472 on 06/05/2013.
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Jamie_472
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Jamie_472
over 11 years ago
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Resource summary
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)
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
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
Moment of a force = Force x Perpendicular Distance
A moment is a turning force
Clockwise Moments = Anticlockwise Moments
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)
Output Speed = Input Speed / Velocity Ratio
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