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In order to understand the concept of work, one must first understand the concept of energy. Energy is the ability to do work and is classified into two types: potential and kinetic. Potential energy is the energy that is stored in an object due to its position.
Work, Energy, and Power. Lesson 1 - Basic Terminology and Concepts; Definition and Mathematics of Work; Calculating the Amount of Work Done by Forces; Potential Energy; Kinetic Energy; Mechanical Energy; Power; Lesson 2 - The Work-Energy Relationship; Internal vs. External Forces; Analysis of Situations Involving External Forces
Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education <a {{0}}>research</a> and engage students through an intuitive, game-like environment where students learn through exploration and discovery.
This collection of interactive simulations allow learners of Physics to explore core physics concepts by altering variables and observing the results. This section contains nearly 100 simulations and the numbers continue to grow.
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Lab 3: Work, Energy & Power Essentials of Physics: PHYS 101. Most of us love the dear old Earth, in fact we’re quite attracted to it. That attraction arises from the Earth’s large mass, not the fact that it is spinning. When we lift a book away from the center of dear old Earth, we do work on that book.
The work-energy theorem states that the net work done on an object equals the change in its kinetic energy. That is, when an external force moves an object through a distance it does work on the object which is evidenced by a change in its velocity or its kinetic energy, KE = ½mv 2 .
