Work and Energy

Overview Potential Energy and Law of Conservation of Energy Work Calculation and Work-Kinetic Energy Theorem

Analysis of Mechanical Energy Conversion When Non-Conservative Forces Do Work

Concept and Calculation of Power

Condition for mechanical energy conservation (only gravity or elastic force does work)

Conservative and Nonconservative Forces

Definition and Calculation of Work

Definition of Work and Determination of Sign

Definition of Kinetic Energy and Derivation of the Work-Energy Theorem

Derivation of the formula for work done by constant force and determination of positive and negative work

Elastic Potential Energy and Hooke's Law

Examples of Energy Transformation and Conservation

Expression of elastic potential energy and relationship between deformation work

Principle of Operation and Mechanical Energy Conversion

Infinitesimal Method for Work by Variable Forces and Integration

Law of Conservation of Mechanical Energy

Mechanical Energy Analysis of Multibody Systems

Potential Energy Curve and Equilibrium State

Preliminary Discussion on Functional Relationships

Relativity of Gravitational Potential Energy and Zero Reference Level

Statement and Proof of the Work-Energy Theorem

Statement of the Work-Energy Theorem

The Bridging Role of Energy Conservation in Thermodynamics

The Physical Significance of Positive and Negative Work

Universality of the Law of Conservation of Energy

Work Done by Constant Force and Variable Force

Work Done by Elastic Force and Elastic Potential Energy

Work Done by Gravity and Gravitational Potential Energy

Work-Energy Theorem in the Simplified Application of Multi-Process Problems