Potential And Kinetic Energy
by Science Photo Library
Title
Potential And Kinetic Energy
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Potential and kinetic energy. 19th-century illustration demonstrating the reciprocal transformation between potential energy and kinetic energy. The example here is a flexible rod being pulled to one side while held in a clamp. The energy expended in the muscles used to pull the rod to one side is stored as potential energy in the tension of the rod. When released, this energy is converted into kinetic energy as the rod oscillates back and forth. At the moment when the rod is stationary at the peak of each oscillation, the potential energy is a maximum and the kinetic energy is zero. At the mid-point, the kinetic energy is a maximum and the potential energy is zero. Eventually, the rod stops vibrating, as energy is dissipated through friction. This illustration is from 'Physique Populaire' (Emile Desbeaux, 1891).
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September 21st, 2018
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