To find out how much torque (we call it $\tau$) is in a spinning system, you can use this formula:

$$\tau = r \times F \cdot \sin(\theta)$$

Let's break that down:

• $r$ is how far you are from the pivot point to where you apply the force. Think of it like the distance between the hinge and the door handle.
• $F$ is how strong your push or pull is.
• $\theta$ is the angle between the direction of your force and the lever arm (which is the part you are pushing).

Here’s a simple example:

When you push the handle of a door, the distance from the door's hinge to the handle is $r$. The force you use to push the door is $F$, and if you push at an angle $\theta$, the torque you create helps you open the door more easily.

So, the more effectively you apply your force, the easier it will be to move things!