The concept originated with the studies by Archimedes of the usage of levers, which is reflected in his famous quote: "Give me a lever and a place to stand and I will move the Earth". The … See more

The principle of moments, also known as Varignon's theorem (not to be confused with the geometrical theorem of the same name) states that the resultant torques due to several forces applied to about a point is equal to the sum of the contributing torques: See more

Moment arm formula
A very useful special case, often given as the definition of torque in fields other than physics, is as follows:
$${\displaystyle \tau =({\text{moment arm}})({\text{force}}).}$$
The construction of … See more

• "Horsepower and Torque" Archived 2007-03-28 at the Wayback Machine An article showing how power, torque, and gearing affect a vehicle's performance.
• Torque and Angular Momentum in Circular Motion on Project PHYSNET. See more

A force applied perpendicularly to a lever multiplied by its distance from the lever's fulcrum (the length of the lever arm) is its torque. Therefore, torque is defined as the product of the … See more

Torque has the dimension of force times distance, symbolically T L M and those fundamental dimensions are the same as that for energy or work. Official SI literature indicates newton-metre, is properly denoted N⋅m, as the unit for torque; although this is See more

• Moment
• Bending moment
• Conversion of units
• Friction torque
• Mechanical equilibrium See more