Learn to calculate the center of mass, moment of inertia tensor, and angular velocity vector for three masses using Python in this comprehensive 27-minute tutorial. Explore key concepts including center of mass calculation, working with lists, defining functions, constructing the moment of inertia tensor, performing matrix multiplication, and determining angular momentum. Follow along with provided Python code to gain hands-on experience in implementing these physics concepts computationally. Ideal for students and enthusiasts looking to deepen their understanding of angular momentum and moment of inertia in a practical, code-based approach.