§9.3 — Conservation of Momentum
Conservation of momentum is one of the most fundamental laws in physics and follows directly from Newton’s second law for the center of mass (§9.2).…
§9.2 — Motion of Center of Mass
One of the most powerful results of classical mechanics is that the center of mass of a system behaves like a single particle with mass equal to the…
Chapter 9 — Q&A
Here are questions that often come up while learning this chapter — with short, clear answers. Questions are ordered from foundational to advanced.…
Chapter 9 — Flashcards
Center of Mass and Momentum — the framework for understanding multi-body systems! Master the center of mass, linear momentum, collisions, and impulse…
§9.1 — Center of Mass
The center of mass (or center of gravity) is the point that represents the overall motion of a system. For a rigid body or system of particles, it is…
Chapter 9 — Center of Mass and Particle Systems
Center of mass, linear momentum, impulse, elastic and inelastic collisions in particle systems — step-by-step problem solutions.
Chapter 8 — Q&A
Here are questions that often come up while learning this chapter — with short, clear answers. Questions are ordered from foundational to advanced.…
Chapter 8 — Flashcards
Potential Energy and Conservation — the most powerful tools in physics! Master potential energy, conservative forces, energy conservation, and energy…
§8.7 — Complex Systems
Most real systems involve multiple particles, multiple degrees of freedom, or constraints that couple the motion of different parts. A rigid body…
§8.6 — Energy Diagrams
An energy diagram is a graph of potential energy $U(x)$ as a function of position. It encodes rich information about motion without requiring…