PPT Slide

Extended force diagrams

- Pick a pivot point (O)

- The distance from O

to the point at which the

Force is being applied is

the “moment arm” r

- The torque is the perpendicular

component of the Force to the

moment arm

- Sum all the torques

Clockwise (CW)=“-”

Counterclockwise (CCW)=“+”

rb=rc

(for 2D rotations)