Is There Evidence for the Existence of Torque in a Stationary System?

[Phil7860]

Okay, so the problem is pretty simple:

Prove that in a stationary (non-rotating) system, that the sum of the torque equals zero.

My solution is to take a meter stick that's mass is evenly distributed. Find the center of the meter stick, then balance it on a fulcrum point. Since the object is not rotating, the sum of the torques must equal zero.

Move the meter stick to the left or right, and the stick will rotate counter/clockwise.

My question is, would that convince you that the sum of the torque equals zero in a stationary system?

 

[billiards]

move it so it's off balance then put a light weight on the far, long end; and put a heavier weight on the shorter end wherever appropriate to make the thing balance.

 

[kyle8921]

I would say that this experiment does provide evidence for the existence of torque in a stationary system. By balancing the meter stick on a fulcrum and observing its rotation when moved, we can see that there is a force acting on the object, causing it to rotate. This force is what we call torque.

Furthermore, this experiment follows the basic principles of torque - the force applied (moving the meter stick) is at a distance from the fulcrum (center of the meter stick), resulting in a rotational force. This shows that the sum of the torques must equal zero in a stationary system, as any imbalance in the forces would cause the object to rotate.

In addition, this experiment can be replicated and verified by other scientists, further supporting the existence of torque in a stationary system. Therefore, while this experiment may not be the only way to prove the existence of torque, it does provide strong evidence for its existence in a stationary system.