Work, Energy and Energy Resources
Explore the principles of work and energy, including how to calculate work, the work-energy theorem, gravitational and potential energy, nonconservative forces, and the law of conservation of energy, as well as examining different forms of energy, power, and energy consumption in humans and the world at large.
Introduction to Work, Energy, and Energy Resources
What It Means to Do Work
Calculating Work
Summarizing Work: The Scientific Definition
Work Transfers Energy
Net Work and the Work-Energy Theorem
Summarizing Kinetic Energy and the Work-Energy Theorem
Work Done Against Gravity
Converting Between Potential Energy and Kinetic Energy
Using Potential Energy to Simplify Calculations
Summarizing Gravitational Potential Energy
Potential Energy and Conservative Forces
Potential Energy of a Spring
Conservation of Mechanical Energy
Summarizing Conservative Forces and Potential Energy
Nonconservative Forces and Friction
How Nonconservative Forces Affect Mechanical Energy
How the Work-Energy Theorem Applies
Applying Energy Conservation With Nonconservative Forces
Summarizing Nonconservative Forces
Law of Conservation of Energy
Other Forms of Energy Than Mechanical Energy
Some of the Many Forms of Energy
Transformation of Energy
Efficiency
Summarizing Conservation of Energy
What is Power?
Calculating Power From Energy
Examples of Power
Power and Energy Consumption
Summarizing Power
Energy Conversion in Humans
Power Consumed At Rest
Power of Doing Useful Work
Summarizing Work, Energy, and Power in Humans
Renewable and Nonrenewable Energy Sources
The World’s Growing Energy Needs
Energy and Economic Well-Being
Conserving Energy
Summarizing World Energy Use