a) Physical pendulum, O is the pivot point, C is the centre of mass.... | Download Scientific Diagram
How to calculate torque required to move a horizontal arm rotating about a central vertical axis and containing a weight on one end of the arm - Quora
![mechanical engineering - Calculating the force and/or torque required to pivot an arm from one end - Engineering Stack Exchange mechanical engineering - Calculating the force and/or torque required to pivot an arm from one end - Engineering Stack Exchange](https://i.stack.imgur.com/4mLss.png)