The goal for today's lesson is to apply that knowledge of work and energy (HS-PS3-3) in a lab activity. Rube Goldberg Project - this will replace a test, quiz, or lab score. Once these foundations are laid, we can derive new concepts from the axioms, furthering our understanding of mechanics and allowing us to extend our study to new and more complex physical situations. Energy stored in an object is its potential energy as a result of its position. %PDF-1.3 Lab 6.Work and Energy Goals •To apply the concept of work to each of the forces acting on an object pulled up an incline at constant speed. It is from its definition that power is the rate of doing work at specific displacement. .if you can't see the answers.. download the file and view it in Microsoft Wor << /S /GoTo /D [6 0 R /Fit ] >> Unit of power to compare work done by a steam engine to a horse. 1. Lab 3: Work, Energy & Power Essentials of Physics: PHYS 101 Most of us love the dear old Earth, in fact we’re quite attracted to it. They are probably the first thing you learn in your Physics class. Work and Energy are closely related terms which are quite often used in our daily life activities. %��������� Finish Workout Lab 2. Power can be determined using work by considering the time. Gravitational potential energy and conservative forces. Conservation of Energy Day1: 11/13 1. And for doing work energy is required. or, in symbols: In this lab, you let gravity do work on a dynamics cart and compare the work done on the cart to the cart's kinetic energy. Engineers must know how to calculate the power and energy needed to do the necessary work or provide the required heat. Go over Springs and Conservation of Energy Hwk: Continue working on Barbie Bungee; Extra Practice with Springs ; Answers (scroll down. It is the energy that measures the potential for work to be done. Mathematically, work is represented by: Here in this topic, students learn more in detail about work, power, force, energy and how are they interrelated to each other. Concepts Energy, Work, Power Introduction Ever wonder if you can be more powerful that a Ford Mustang? Energy 3. SI units for power. Learn. •To compare the total work on an object to the change in its kinetic energy as a ﬁrst step in the application of the so-called Work-Energy Theorem. Work/energy problem with friction (Opens a modal) Conservative forces (Opens a modal) Power (Opens a modal) What is power? Laboratory #5 Energy, Work, and Power Part A. I am More Powerful Than a Ford Mustang! %PDF-1.4 The unit used to measure work and energy is a joule. This energy we get from … Terms in this set (17) Work. The Work/Energy Equation says "The work done on an object by the net force on it equals the object's change in kinetic energy." 2 0 obj Force exerted on an object that causes it to move. Conservative forces. L8-2 Lab 8 Work and Energy You will begin by comparing your intuitive, everyday understanding of work with its formal mathematical deﬁnition. Work is a force applied over a distance. The Work, Energy and Power chapter of this course is designed to help you plan and teach the students in your classroom about the various forms of energy and power in physics. The basic concepts of work, force, energy and power are fundamental physics concepts utilized in many engineering calculations and design. Now is your opportunity to find out! 8.01x - Lect 11 - Work, Kinetic & Potential Energy, Gravitation, Conservative Forces - Duration: 49:06. >> Therefore, I conclude that work is related to power. CONCLUSION. EXPERIMENT 6: WORK AND ENERGY Objective: To validate the work-energy theorem and to study the conservation of energy principle. Watts. 5 0 obj Work and energy can be considered as two sides of the same coin. Theory: The work-energy theorem states that the net (total) work done on a system is equal to its increase in kinetic energy. They should be clearly organized and easy to find. There are, however, many cases where the force is not constant. That energy can be measured by looking to the weight of the jar and the height of the incline. Spierings, Spring 2012, Physical Science, Motion/Force - Work, Power, Energy. I love this. Work simulation and problems Day 2: 11/14 1. If she applied a 650 N force during that time with the same power output, how far did she swim? Power is the time rate at which work is done. In this lab you will examine three physical quantities: Energy, Work, and Power and the related units of measure. (Answer shown below.) In The rate of doing work. Work and Power 2. Similar to work and energy, power is a scalar quantity. Topics and Subtopics in NCERT Solutions for Class 11 Physics Chapter 6 Work Energy and Power: Section Name: Topic Name: 6: Work Energy and power: 6.1: Introduction: 6.2: Notions of work and kinetic energy : The work-energy theorem: 6.3: Work: 6.4: Kinetic energy: 6.5: Work done by a variable force: 6.6: Therefore, the power is calculated as follows. Every engineered device that moves, lifts or pushes requires energy. The rate at which work is done or energy is transformed is called Power. In that sense, work might be something you need to finish or learn in a certain amount of time. You will ﬁrst consider the work done on a small point-like object by a constant force. Like Like. (Opens a modal) Potential energy stored in a spring In this formula, E stands for energy, H stands for height above the ground and W stands for weight of the jar. stream You have provided all information about work, energy, and power. power = work ÷ time = 3,640 joules ÷ 15 sec = 242.7 joules/sec = 242.7 watts. Begin Workout Lab 3. The work-energy theorem states that the net work done on an object equals the change in its kinetic energy. Work and Power Newton's Laws, and dynamics as a whole, provide us with fundamental axioms for the study of classical mechanics. 257,814 views Work, energy and power are the most used terms in Physics. If you provide more examples and problems on work, energy, and power then it will be a great post. 9 0 obj << We do work because we must counteract its stream Use an organizational system and label all … So, for example, pushing a box with 10 Newtons of force for 15 meters is work. The Laboratory. That is, when an external force moves an object through a distance it does work on the object which is evidenced by a change in its velocity or its kinetic energy, KE = ½mv 2. In doing so, we first need to define (review) some concepts. Power. Finish word problems Day 3: 11/15 1. For the experiments done here, energy can be measured according to the following formula: E = HW. Intro to springs and Hooke's law (Opens a modal) What is Hooke's Law? But in physics, we define work a little differently. �I��y�^I&{%�q������|�Es�踘��1P�4CU3n9 )��8���f�~����}��1��s~���x�T�M�NK�UM��|i����οnϞ�D.�4m��ٕ����ɨ�l�vC���m7�JW�+��X:Mv���]��R��}{*�%��NOs*�4=��S�y[ �����@�'Y7}�O�E�a'�?8�Ӱ�ھ���L�����u����Q��]=�Qy4��1@뷈f�|^^Q9/��ܢ���1w��-�y?��u�� ��Ҵ�w�F-웇�tŦ�y�=�S��墵ލ������:�E��u9-4�lVEy�_�����]����^ɁL��c�i&B�{Λ�B4�uA,�W��E����,E;�(��K�|1�D�?�D�+e1 3;�ܻ��.����̂Yn�&��}��X#���2�����l��. Work and Power Concept Check Day 4: 11/16 1. 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q�J�H�=LJ˨h�n���J�U[Ա�;�#&}!�mS�i�Uыzs�3,�$���. Gravitational potential … Finish work and power notes 2. If we increase the displacement twice, work is also increasing twice. About; Teacher Guide; Using Lab Notebooks; Share; The Photo Gallery. During this lab, we will focus on the concepts of work, energy, and power as applied to human movement. The following items should be in the Work and Energy portion of your notebook. This is so helpful, consice and easy. endobj x��}�nɕ�{|E=Ȁ&�K����=32,�q J�HZT-���ߟ�K�Ȍ�,�Ur�$9/�}]{������ʯ�`��!�U�f(���J�9�>]�~^�W����f���J��������+��VZ��?�L�Wɕa|������7����Ǜ����_3�Y�y�z�_�[�����������f�&{���c�G^5�2>��������~9�Z�_�Չ��u�ژ��]�G7��x�fc~�y�G��z�YNB0f��\�Aq@���\x�Ȟ�k�s����n�qT�7�q�ǆeN>�2h�}ɓ�u��2e���m������aY֟wê���=/Κ)���1��Ȫ��&��W�I���}ȚI���^I��6rE��83I�O�3�O?����'���pE�h�A^>�պ���C;-4��-\���.�+QOW���W|$��q����.�q�+ The concept of horsepower (the English unit for power) tells you how much energy a car generate in a given time period. When work is done on an object by a force acting parallel to its displacement the formula is: workdone = force x displacement For positive work to be done, F and s must be parallel and pointed in the same direction. Reply. Equal to 746 watts. Lectures by Walter Lewin. The work has linear relation with displacement. By converting our sims to HTML5, we make them seamlessly available across platforms and devices. How long does it takes a swimmer with a power output of 275 watts to accomplish 3600 J of work?. Work can also be defi… When we lift a book away from the center of dear old Earth, we do work on that book. They will make you ♥ Physics. /Length 2761 velisa October 17, 2016. Here's how it's done. (Opens a modal) Springs and Hooke's law.