PHY 101L Module Five Lab Report

.docx

School

Southern New Hampshire University *

*We aren’t endorsed by this school

Course

101L

Subject

Chemistry

Date

Dec 6, 2023

Type

docx

Pages

Uploaded by emily_ware

PHY 101L Module Five Lab Report Name: Emily Donahue Date: 11/26/2023 Complete this lab report by replacing the bracketed text with the relevant information. Overview In this investigation, you’ll design an experiment to test the law of conservation of energy. Then you’ll perform that experiment. This is completely open-ended. This allows you to use whatever materials and data acquisition techniques that you would like! Safety Read all the instructions for this laboratory activity before beginning. Observe established laboratory safety practices. Safety goggles should be worn during this lab. Make sure the lab area is clear of pets, children, and breakable objects. Do not eat, drink, or chew gum while performing this activity. Wash your hands with soap and water before and after performing the activity. Clean up the work area with soap and water after completing the investigation. Keep pets and children away from lab materials and equipment. Time Requirements Preparation: 30 minutes Experiment: 30 minutes Materials Needed From the Lab Kit Tape measure Materials Needed but Not Supplied in the Lab Kit Stopwatch Calculator Pen and paper for notetaking Procedure 1. You’ll design an experiment to test the law of conservation of energy. This experiment should include the measurement of some kind of energy transformation. This could be energy transformations from gravitational or elastic potential energy to kinetic energy, from potential energy to kinetic energy, or from kinetic energy to potential energy. The possibilities are endless! You’re free to use materials from your Carolina Biological lab kit. Or you may use materials that you have around your home. In either case, always make sure that you are following safe laboratory practices. * If you are unsure whether the experiment you plan on designing includes the measurement of an energy transformation, consult with your instructor. a. Possible energy transformations include the following: i. Measuring the initial and final gravitational potential energies of a ball bounced on a hard surface

ii. Measuring the initial gravitational potential energy and final kinetic energy of a ball rolling down an inclined plane iii. Measuring the initial elastic potential energy and final gravitational potential energy of a rubber band or spring launched upward from the ground 2. Once you’ve identified all of the materials needed for your experiment, gather all of your needed materials, a timing device, a tape measure, and pen and paper for note-taking. 3. Next, perform your experiment. Take note of all the data that you collect and any calculations that you use. Some equations that might be helpful include the following: kinetic energy = ½ mass x velocity 2 gravitational potential energy = mass x gravitational acceleration x height elastic potential energy = ½ spring constant x displacement 2 total initial energy = total final energy 4. Using your calculations, determine whether or not energy was conserved in your experiment. If energy was not conserved, explain why you feel that it was not conserved. Lab Questions 1. Explain the procedures you used to perform your experiment. This should include all of the materials that you used, the procedure that you followed, as well as any calculations used in your experiment. Include sufficient detail so that a fellow student could follow your instructions and complete your experiment exactly as you did. Materials used: angle bar, steel sphere, clay, measuring tape, book, stopwatch, calculator, pocket scale, ruler. Place one end of the angle bar on the book and one end on a flat surface. Place some clay on the book and on the table to create seats for the angle bar so that it will stay in place. Use measuring tape and marker to mark three lines at 0.10 m, 0.20 m, and 0.30 m from the lower end of the track. Measure the distance between each marked point on the angle bar and the table with the ruler, record this value on the table as the height. Place the steel sphere on the tared pocket scale, record this value on the table as the mass. Release the sphere from each marked point and allow it to roll to the end of the angle bar. Use a stop watch to measure the time it takes the sphere to roll from each point to the end of the angle bar, record this value on the table as time. Calculate the velocity of the sphere using the equation V = d/t, where V is the velocity, d is the distance from the end of the angle bar, and t is the time it takes the sphere to roll down the bar. Calculate gravitational potential energy using the equation G.P.E. = mgh. G.P.E. is the gravitational potential energy, m is the mass of the steel sphere, g is the gravitational acceleration, and h is the height of the angle bar at each marked point. Calculate translational kinetic energy using the equation KE trans = ½ mv 2 . KE trans is the translational kinetic energy, m is the mass of the sphere, and v is the velocity of the sphere. Record these values on the table.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version