Torque is the combination of force applied at a point with the right angle (perpendicular) distance from that point to the axis of rotation (in our case, this'll be an axle). You can think of torque as being essentially a "twisting force." The formula to compute torque about an axis is simply this:

T = F * d, where

T = Torque

F = Force (here, the force applied perpendicular to the axis)

d = Distance

In 2 dimensions, you can visualize this simply:

Torque, force, moment-arm

For more details on the subject, see the BEAM From the Ground Up tutorial on torque here.

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Page author: Eric Seale  
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