Work and Potential Energy
The scalar product of a force F and the velocity v of its point of application defines the power input to a system at an instant of time. Integration of this power over the trajectory of the point of application, C=x(t), defines the work input to the system by the force.
Read more about this topic: Work (physics)
Famous quotes containing the words work and, work, potential and/or energy:
“I must work, so as not to be a fool, to get on, to become a journalist, because that’s what I want!... I can’t imagine that I would have to lead the same sort of life as Mummy ... and all the women who do their work and are then forgotten. I must have something besides a husband and children, something that I can devote myself to!”
—Anne Frank (1929–1945)
“I pray every single second of my life; not on my knees, but with my work. My prayer is to lift woman to equality with man. Work and worship are one with me. I can not imagine a God of the universe made happy by my getting down on my knees and calling him “great.””
—Susan B. Anthony (1820–1906)
“The germ of violence is laid bare in the child abuser by the sheer accident of his individual experience ... in a word, to a greater degree than we like to admit, we are all potential child abusers.”
—F. Gonzalez-Crussi, Mexican professor of pathology, author. “Reflections on Child Abuse,” Notes of an Anatomist (1985)
“Viewed narrowly, all life is universal hunger and an expression of energy associated with it.”
—Mary Ritter Beard (1876–1958)