The potential energy is calculated from the measured height and the kinetic energy is calculated from the speed. In the third part be aware how you set o the motion of the hook mass on the spring. In this experiment, you will make measurements to demonstrate the conservation of mechanical energy and its transformation between kinetic energy and potential energy. Since the force was conservative, the mechanical energy throughout the experiment stayed the same, with no energy being lost or gained. Free fall and conservation of mechanical energy abstract free fall is defined as the ideal falling motion of an object that is subject only to the earths gravitational field. A mass on a spring will oscillate vertically when it is lifted and released. To prove the law of conservation of energy, the free fall motion of an object can be represented through 3 different analyses. Conservation of mechanical energy lab report the best. We were very successful, yielding very small percent differences between the initial and final total mechanical energies. The total energy is a quantity that does not change. In part i, you will measure the potential and kinetic energies of a roller coaster rolling down a track, using those values to find the total energy of the roller coaster over time. Some energy is missing near the end of the run and this energy might have left the experiment because of the force of friction. Energy is sometimes introduced as if it is a concept independent of newton. Conservation of energy how does the compression of a spring affect the motion of a cart.
Introduction 20 points this lab will demonstrate the principles behind the law of conservation of mechanical energy. Physics students no longer have to assume that energy is conserved when a ball rises and falls through the air. The conservation of momentum is a very important concept in physics. To measure kinetic and potential energies of a simple pendulum and test the hypothesis that the total mechanical energy is conserved for a system involving only conservative forces. Unlike previous lab reports you will use the computer to do all the tedious work. Physics instruction using video analysis technology ap.
Conservation of mechanical energy virtual experiment hypothesis how will. If, on the other hand, friction or another nonconservative force is present, the difference between. The purpose of this lab is to study the law of conservation of energy by experimenting with 3 simple machines. Remote work advice from the largest allremote company. Conservation of mechanical energy lab report give your assignments to the most talented writers. Conservation of energy lab by allen keyvan on prezi. Mechanical energy lab report phys 215 physics laboratory. Conservation of mechanical energy laboratory desiree jones. Conservation of mechanical energy advanced placement lab. Conservation of energy lab woodland hills school district. The work energy theorem presents a way of dealing with kinematic quantities in me chanics without regard for vector direction. Measure the distance that the spring compresses and enter the distance into the computer.
Is the mechanical energy constant as a mass bobs up and down on the end of a spring. To use previous knowledge of velocity to perform kinetic energy calculations. Conservation of mechanical energy procedure alternate lab objective in this experiment, you will roll a ball down a ramp and off the table, measuring horizontal and vertical distances associated with the motion in order to determine the speed of the ball at the time it leaves the table. This experiment was designed to study the law of conservation of mechanical energy in a system where. A system of two masses will be accelerated from rest. Conservation of energy with a peg and pendulum 2 introduction. The total energy is calculated for two points on the track and compared. For this experiment, all calculations were done in an. Please watch this video that explains the content before answering any questions. This lab manual covers the new college board learning objectives with data analysis and assessment questions designed to prepare students for the ap physics 1 exam.
In theory, the potential energy of an object should match the kinetic energy at the bottom of the drop for each trial. Conservation of energy lab answers schoolworkhelper. Investigating the conservation of mechanical energy using video. Lab notebooks will be used, and several lab reports will be required during the year.
Calculate the mechanical energy at points a, b and c. These equations represent the principle of conservation of mechanical energy. The law of conservation of energy states that energy cannot be created or destroyed in a closed or isolated system. The gravitational potential energy increases from a minimum at the lowest point to a maximum at the highest point. Initially the system has gravitational potential energy only. If it is, then the total amount of mechanical energy doesnt change and we can say that the mechanical energy is conserved.
This activity shows students the engineering importance of understanding the laws of mechanical energy. This statement is called the law of conservation of energy. In this lab, students use a photogate and dynamics system to explore how a carts kinetic energy, gravitational potential. Phy 3 lab 5 conservation of energy stony brook physics. The analysis of these values showed that momentum is conserved in all collisions.
In this lab this was analyzed in multiple collision situations. An apple falling off a cliff has gravitational potential and kinetic energy, so it therefore. Potential energy is the energy associated with the forces that depend on the position of the object. Here is a visual aide to help you through mechanics lab 3 conservation of mechanical energy. Introduction to conservation of mechanical energy with. The total amount of mechanical energy, in a closed system in the absence of dissipative forces e. The concept of energy conservation raises a number of. The principle says that if the net work done by nonconservative forces is zero, the total mechanical energy of an object is conserved. Conservation of energy mit opencourseware free online.
Ian terry, winner of big brother 14, makes a special appearance to help us learn about conservation of mechanical energy. Conservation of energy total mechanical energy we sometimes call the total energy of an object potential and kinetic the total mechanical energy of an object. Videopoint capture, videopoint, and graphical analysis software. Conservation of mechanical energy the capability of using video analysis for investigating the conservation of mechanical energy may be one of its most useful applications. Central challenge in this investigation, students experiment with the concept of the conservation of energy by qualitatively investigating the relationship between elastic potential energy and gravitational potential energy. Conservation of mechanical energy lab report sample essay.
In this lab, students use a photogate and dynamics system to explore how a carts kinetic energy, gravitational potential energy, and total mechanical energy changes as it rolls down an inclined track. Conservation of mechanical energy introductory physics labs. However, there are specific types of potential energy and in this lab we will consider gravitational potential energy. Coach is the software package of the multifunctional interface coach lab.
Mechanical energy lab report phys 215 physics laboratory i. The initial energy put into a system is equal to the energy given out by the system. Conservation of mechanical energy laboratory desiree. After you take your data in logger pro, go to fileexport astext. This lab deals with the conservation of mechanical energy where gravitational potential energy and kinetic energy are concerned. This was done by causing elastic collisions, inelastic collisions, and explosions of carts on a dynamic track. A body with mass m and speed v has energy by virtue of its motion.
Investigating the conservation of mechanical energy. The conservation of energy pendulum introduction the purpose of this experiment is to measure the potential energy and the kinetic energy of a mechanical system and to quantitatively compare the two forms of mechanical energy to determine if the total mechanical energy is conserved. Potential energy is the energy an object has due to its position, shape or form. Announcements for conservation of mechanical energy lab. The computer program connected to the photogates gave. In the first part of this experiment, we will study. The %difference data in your data table will give you an indication of the answer to that question.
Contemporary issues in technology and teacher education, 43, 284298. The mass can disengage from the spring and fall on your foot or motion sensor. This article describes the use of video analysis software in studying energy. The principle of conservation of mechanical energy dummies.
The sum of the gravitational potential energy and kinetic energy is called the mechanical energy. It shows the conversion of potential energy into kinetic energy. Physics lab conservation of mechanical energy phys 221. Using the conservation of mechanical energy of a falling and bouncing ball as its context, this paper describes how inexpensive video analysis technology makes possible the investigation of numerous types of motion with detail and precision that would be incredibly difficult, if not impossible, without the use of this technology. Given a pendulum height, students calculate and predict how fast the pendulum will swing by using the equations for potential and kinetic energy. Investigating the conservation of mechanical energy using video analysis pause and. The purpose of this lab was to use a spring launcher to show that total mechanical energy remains constant when acted upon by a conservative force.
Lab 4 conservation of mechanical energy introduction when a body moves, some thingssuch as its position, velocity, and momentumchange. Conservation of energy experiment ex9935 products pasco. Energy cannot be created or destroyed, but is merely changed from one form into another. Measure the distance that the spring compresses and enter the. See several demonstrations and understand when mechanical energy is conserved. Phys 2425 engineering physics i experiment 5 conservation of.
The magnitude of the velocity vector is related to the components. The purpose of this lab is to verify the conservation of mechanical energy experimentally equipment. Conservation of mechanical energy mechanical energy. In this lab there are two parts, both of which will measure how energy is conserved in a system. Conservation of mechanical energy procedure alternate lab. Gravitational potential energy is the energy possessed by the objected due to earths gravity. Definition of the law of conservation of energy, with examples. Conservation of mechanical energy lab report sample essay example. Did all of the potential energy transfer to kinetic energy in your test. Mechanical energy doesnt mean that it always has to involve machines. View lab report conservation of mechanical energy virtual lab from science phy01i08 at keystone national high school. In this lab, you will study what happens when mechanical energy is converted between elastic potential energy and gravitational potential. Conservation of mechanical energy lab report best essay aid. Introduction the objective of this experiment is to test the law of conservation of mechanical energy.
Conservation of energy one of the most important and useful concepts in mechanics is that of \ conservation of energy. We interpret the sign to mean that the gravitational potential energy of the ball before it fell was converted into an exactly. When all forms of energy are considered, conservation of energy is written in equation form as, where is all other forms of energy besides mechanical. In a laboratory study conducted by bryan, 2010, a video analysis was used to. Video analysis software and the investigation of the conservation of mechanical energy. Since the law of mechanical energy conservation forms an integral part of any.
Advanced physics through inquiry 1 teacher guide ps2848. More specifically, it demonstrates how potential energy can be converted to kinetic energy and back again. Conservation laws play an important role in physics. To make calculations of gravitational potential energy. An apple falling off a cliff has gravitational potential and kinetic energy, so it therefore has mechanical energy. This means that potential energy can become kinetic energy, or vice versa, but energy cannot disappear. Energy is defined as the ability to do work and is a scalar quantity. Each lab includes a teachers resource section with college board correlations, prelab discussion and questions, procedural overview, tips, and sample data, assessment and synthesis questions.
In this lab exercise one of these conservation principles, the conservation of energy, will be explored. Introduction in this lab we will use data from a previous experiment a steel marble starts from rest and rolls down an aluminum track and then onto the floor, see figure 1 to test the following hypothesis. Conservation of mechanical energy physics and astronomy. A vector can be expressed as the sum of its components along a conveniently chosen coordinate system. You will use two different methods for this experiment. The mechanical energy time graph shows an almost straight line which proves that the force of gravity is conservative. Video analysis software and the investigation of the.
The total amount of energy in the universe remains constant, meaning that. Mechanical energy is never created nor destroyed, but it can be converted from one form to another. It also shows conservation of energy since potential energy is stored in the springloaded gun which becomes kinetic energy when the massive bob is fired, and is converted back to potential energy when it catches the ratchet. This lab will demonstrate the principles behind the law of conservation of mechanical energy. Desiree jones september 23, 2015 physics conservation of mechanical energy. The purpose of this lab is to test the validity of the conservation of total mechanical energy.
A graph of the ratio postcollision mechanical energy precollision mechanical energy as a function of precollision speed, in which the graph stays near 1. Using the conservation of mechanical energy of a falling and bouncing ball as its. The purpose of this activity is to measure the energy of a bouncing ball and to verify its conservation. In this experiment, you will make measurements to demonstrate the conservation of mechanical energy and.
Phy 3 lab 5 conservation of energy the purpose of this lab is to experimentally verify the conservation of mechanical energy. Conservation of mechanical energy portfolio unit 3 lesson 3 for this exercise, you will be using this website simulation on conservation of energy. Phys 2425 engineering physics i experiment 5 conservation of mechanical energy i. The conservation principles are the most powerful concepts to have been developed in physics. Lab 4 conservation of mechanical energy andrews university. Energy may change in form or be transferred from one system to another, but the total remains the same. Explain how your data relates to the law of conservation of energy.
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