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, potential and/or energy:
“A good story is one that isnt demanding, that proceeds from A to B, and above all doesnt remind us of the bad times, the cardboard patches we used to wear in our shoes, the failed farms, the way people you love just up and die. It tells us instead that hard work and perseverance can overcome all obstacles; it tells lie after lie, and the happy ending is the happiest lie of all.”
—Kathleen Norris (b. 1947)
“The planet on which we live is poorly organized, many areas are overpopulated, others are reserved for a few, technologys potential is only in part realized, and most people are starving.”
—Friedrich Dürrenmatt (19211990)
“The flattering, if arbitrary, label, First Lady of the Theatre, takes its toll. The demands are great, not only in energy but eventually in dramatic focus. It is difficult, if not impossible, for a star to occupy an inch of space without bursting seams, cramping everyone elses style and unbalancing a play. No matter how self-effacing a famous player may be, he makes an entrance as a casual neighbor and the audience interest shifts to the house next door.”
—Helen Hayes (19001993)