ctivity WORK AND POWER I. Theory: The concepts of work provide a convenient means of analyzing an object or system of objects moving between an initial and final state. Basically, work is defined as the product of force and distance. To express that mathematically these are w = Fx d or w = m x g xh When work is done upon an object by an external force, the total mechanical energy (KE + PE) of that object is changed. If the work is "positive work", then the object will gain energy. If the work is "negative work", then the object will lose energy. The gain or loss in energy can be in the form of potential energy, kinetic energy, or both. Under such circumstances, the work which is done will be equal to the change in mechanical energy of the object. In this experiment, we will utilize the concept of work by applying it to a student performing this experiment. A diagram below illustrates how the work is being utilized. Figure 12.1 Diagram of ladder
ctivity WORK AND POWER I. Theory: The concepts of work provide a convenient means of analyzing an object or system of objects moving between an initial and final state. Basically, work is defined as the product of force and distance. To express that mathematically these are w = Fx d or w = m x g xh When work is done upon an object by an external force, the total mechanical energy (KE + PE) of that object is changed. If the work is "positive work", then the object will gain energy. If the work is "negative work", then the object will lose energy. The gain or loss in energy can be in the form of potential energy, kinetic energy, or both. Under such circumstances, the work which is done will be equal to the change in mechanical energy of the object. In this experiment, we will utilize the concept of work by applying it to a student performing this experiment. A diagram below illustrates how the work is being utilized. Figure 12.1 Diagram of ladder
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter5: Energy
Section: Chapter Questions
Problem 4P: a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the...
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