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This wonderful website explains the theory of conservation of energy, linear momentum, and angular momentum. Its interactivity involves quizzes and two Java "games"!!
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thinkquest.org
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This website provides not only an explanation of how the ballistic pendulum can be used to measure the speed of a bullet but also a calculator to check your work. It can be used to explain a similar assembly involving a spring instead of a pendulum as well. You simply substitute the equation for the potential energy of a spring for (M+m)gd -- the potential energy of the pendulum.
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Hyperphysics
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This describes (with equations and diagrams) the work-energy principle, and how it applies to rotation, including the important conditions for rolling without slipping.
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HyperPhysics
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Interactive illustration of the Carnot Cycle used as a heat engine.
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Galileo and Einstein Physics -- U. of Virginia
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Covers conservation laws of momentum, energy and angular momentum by clicking on the flowcharts for explanations and equations.
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Hyperphysics
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This website contains Newton's laws as applied to an Atwood machine with algebra detailing the solution.
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jhu.edu Newton's law problems
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This website contains information and diagrams regarding the physical principles describing the motion of an Atwood machine. It also has a form in which you can plug in numbers and get results for tension.
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gsu.edu Atwood machine
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Choose a machine on interactive site (Flash needed)to learn about its function, the mechanical advantage and efficiency of work.
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Simple Machines
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