To understand how Newton's Second Law works in spinning things, we need to talk about something called torque.

Just like force makes things speed up in a straight line, torque makes things speed up as they spin. Here's a simple breakdown:

1. Torque ($\tau$): Think of torque as the twist that makes something turn. It's kind of like force, but for spinning. You can find torque using this formula: $\tau = r \times F$. Here, $r$ is the distance from the spot where the object pivots to where you're applying the force.

2. Moment of Inertia ($I$): This is similar to mass when something is spinning. It shows how the mass is spread out related to the spinning point. The more spread out the mass is, the harder it is to get something to spin.

3. Angular Acceleration ($\alpha$): This tells us how quickly something is changing its spinning speed. It’s like how regular acceleration ($a$) works for things moving straight.

Putting this all together, we can say:

$$\tau = I \alpha$$

This formula helps us figure out how things spin and what happens when they are balanced or moving. It gives us a way to understand how things rotate in the real world.