# Experiment 6: Work, Power and Energy Laboratory Report

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Experiment 6: Work, Power and Energy Laboratory Report Eljine Jayson Zhang, Shaira Madelene Vinta, Mel Marvin Villarante, Pauline Alyssa Vega, Camille Elijah Valdez, Nicole Dominique Vasquez Department of Physical Therapy College of Rehabilitation Sciences, University of Santo Tomas España, Manila Philippines Abstract This report aims to show how to determine the power output of going up a staircase and going down the same staircase, to determine the change in kinetic and potential energy of an object in free fall, and to demonstrate the conservation of mechanical energy. 1. Introduction Work, power and energy are always in relation to each other for these three are always present in every motion that occurs. Work…show more content…
Figure 2. Experimental set-up in determining the relationship of potential energy and time, kinetic energy and time, and mechanical energy and time of a tossed ball. To determine the relationship of potential energy and time, kinetic energy and time, and mechanical energy and time, a prediction was made by throwing a ball vertically up from a height of 50 cm. The motion was detected using a motion detector covered by a wire basket to protect it. Once the motion detector began to collect data, the ball was tossed straight up. A Logger Pro was used to graph the potential energy versus time, kinetic energy versus time, and mechanical energy versus time graphs. 4. Results and Discussion Activity 1: Power Vertical distance between second floor and third floor = 4.783m Weight (N) 833N Work in going up (J) 3984.4 J Time to go up (s) 12.1 s Power output in going up (W) 329.28 W Work in going down (J) 3984.4 J Time to go down (s) 9.6 s Power output in going down 415.03 W Table 1. Experiment results of group member 1. Weight (N) 666N Work in going up (J) 3185.48 J Time to go up (s) 10.710 s Power output in going up (W) 2976.21 W Work in going down (J) 3185.48 J Time to go down (s) 10.343 s Power output in going down 309.27 W Table 2. Experiment results of group member 2. Weight (N) 500N Work in going up (J) 2391.5 J Time to go up (s) 10.3 s Power output in going up (W) 232.18 W Work