The equation $(Ho)_1 + \sum \int M_o dt = (Ho)_2$ is called the principle of angular impulse and angular momentum.

This principle states that the change in angular momentum of a body is equal to the angular impulse applied to it over time.

Would you like a detailed explanation of this principle or its applications?

Here are 5 related questions:

1. What is the difference between linear impulse and angular impulse?
2. How does angular momentum differ from linear momentum?
3. How can you calculate angular momentum in a rotating system?
4. In what scenarios is the principle of angular impulse and momentum used?
5. How does the moment of inertia affect angular momentum?

Tip: Always remember that angular impulse depends on both the force applied and the time duration over which it acts, making it a time-dependent quantity.