Lyraauce
Experiment 4: Work, Energy, and Power
Laboratory Report
Group 5
Department of Mathematics and Physics
College of Science, University of Santo Tomas
España, Manila, Philippines
Abstract
The concept of energy is central to physics, as many times the analysis of a system 's motion involves understanding how energy is changing. The change in energy is known as work, and the work done over a given period of time is known as power. This concept was applied in this experiment.
Introduction
Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If one object transfers energy to a second object, then the first object does work on the second object. Work is the application of a force over a distance. Force, on the other hand, is equal to the weight of the object, and the distance is equal to the height of an object.
Energy can be defined as the capacity for doing work. The simplest case of mechanical work is when an object is standing still and we force it to move. The energy of a moving object is called kinetic energy.
Power is the work done in a unit of time. In other words, power is a measure of how quickly work can be done. The unit of power is the Watt = 1 Joule/ 1 second. One common unit of energy is the kilowatt-hour (kWh). After knowing the definitions of the terms and the equations to be applied, we now proceed to our main objectives in this experiment, which are: (1) To demonstrate conservation of mechanical energy; (2) To measure change in kinetic and potential energy as a ball moves in free fall; (3) And to determine power output when going up and downstairs.
Theory
Energy - It is one of the most important concepts in the world of science. It is the capacity of a physical system to do work (Jones). This experiment involves mechanical energy. Mechanical energy is the sum of kinetic energy (energy at motion) and potential energy (energy at rest).
Work - It is
Laboratory Report
Group 5
Department of Mathematics and Physics
College of Science, University of Santo Tomas
España, Manila, Philippines
Abstract
The concept of energy is central to physics, as many times the analysis of a system 's motion involves understanding how energy is changing. The change in energy is known as work, and the work done over a given period of time is known as power. This concept was applied in this experiment.
Introduction
Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If one object transfers energy to a second object, then the first object does work on the second object. Work is the application of a force over a distance. Force, on the other hand, is equal to the weight of the object, and the distance is equal to the height of an object.
Energy can be defined as the capacity for doing work. The simplest case of mechanical work is when an object is standing still and we force it to move. The energy of a moving object is called kinetic energy.
Power is the work done in a unit of time. In other words, power is a measure of how quickly work can be done. The unit of power is the Watt = 1 Joule/ 1 second. One common unit of energy is the kilowatt-hour (kWh). After knowing the definitions of the terms and the equations to be applied, we now proceed to our main objectives in this experiment, which are: (1) To demonstrate conservation of mechanical energy; (2) To measure change in kinetic and potential energy as a ball moves in free fall; (3) And to determine power output when going up and downstairs.
Theory
Energy - It is one of the most important concepts in the world of science. It is the capacity of a physical system to do work (Jones). This experiment involves mechanical energy. Mechanical energy is the sum of kinetic energy (energy at motion) and potential energy (energy at rest).
Work - It is
References: Book sources: [1] Serway, R. & Vuille, C. (2011). Physics Fundamentals 1: Philippine Edition. [2] Appel, Kenneth et.al., Physics with Computers, 3rd ed., Oregon: Vernier Software and Technology, 2013 [3] Edmonds, Dean S. Jr, Cioffari’s Experiments in College Physics, Massachusetts: D.C. Heath and Company, 1998 Online sources: [4] http://physics.about.com/od/glossary/g/energy.htm [5] http://hyperphysics.phy-astr.gsu.edu/hbase/ke.html