Assignment: SCI103 Phase 5 Lab Report

QUESTION

Name:Date:Instructor’s Name:Assignment: SCI103 Phase 5 Lab ReportTITLE: Potential and Kinetic EnergyINSTRUCTIONS: Enter the Virtual Lab and conduct the experiments provided. Pleasetype your answers on this form. When your lab report is complete, submit it to theSubmitted Assignments area of the Virtual Classroom.Part I – Answer the following questions while in the Phase 5 lab environment.Section 1 – From the left of the screen to the right, the red balls have a center of mass placed at20 feet, 15 feet, and 10 feet high respectively.1. Suppose each red ball weighs 20 lbs. Find the potential energy (PE) for eachball on each ramp. In this lab mass is given in pounds and height is in feet, souse 32.2 ft/sec2 as the gravitational constant. Your answer will be in footpounds since US units are being used.PE = m g hwhere g = 32.2 ft/sec2Ramp 1:Ramp 2:Ramp 3:2. Predict the maximum speed (velocity) of each ball on each ramp. How wouldthis speed change if each ball’s mass was doubled? ASSUMPTION: assumethere is no friction and that all the potential energy you calculated in question 1 istransformed into kinetic energy – PE = KE. Use the following equation.KE= ½ m v2You want to calculate v maximum speedv = [KE/ ½ m]½This means divide the KE by half the mass and then take the square root.Max v for 20 lb. ballMax v for 40 lb. ballRamp 1Ramp 2Ramp 3Section 2 (Each of the green balls has a center of mass placed at 20 feet high). While each ramplooks identical, each ramp has a different amount of friction.3. Which ramp has the greatest friction?4. Suppose each green ball weighs 10 lbs. Assuming there is no friction, calculatethe potential energy for each ball on each ramp.5. Again assuming there is no friction; predict the maximum speed of the ball oneach ramp. On which ramp does the ball come closest to achieving this maxspeed?Use this table to organize your calculated valuesPEMax Seed (v)Ramp 1Ramp 2Ramp 3Part II – For the following questions, provide your response in short answer format (2-3sentences each). Use this Phase’s activities and resources to assist you in answering:6. What is Potential Energy (PE)? Give examples from the lab.7. What is Kinetic Energy (KE)? Give examples from the lab.8. What is Inertia?9. What is Gravity? How is it a type of potential energy?10. What is Mass and how does it affect energy?11. How do Potential and Kinetic energy (gravity and mechanical force) apply to theLaw of Conservation of Energy?12. What is Friction? How does it affect energy use?

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