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LAB #9

LAB #9. Roller Coaster Energy Audit Conservation of Energy. GOALS. TO ACCOUNT FOR THE MECHANICAL ENERGY OF A BALL ROLLING ON THE COASTER POTENTIAL ENERGY (GRAVITATIONAL) KINETIC ENERGY ENERGY LOST TO FRICTION. FORMS OF ENERGY DEFINED. POTENTIAL: GRAVITATIONAL. PEg = mg D h.

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LAB #9

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  1. LAB #9 Roller Coaster Energy Audit Conservation of Energy

  2. GOALS TO ACCOUNT FOR THE MECHANICAL ENERGY OF A BALL ROLLING ON THE COASTER POTENTIAL ENERGY (GRAVITATIONAL) KINETIC ENERGY ENERGY LOST TO FRICTION

  3. FORMS OF ENERGY DEFINED POTENTIAL: GRAVITATIONAL PEg = mgDh KINETIC: ENERGY OF MOTION KE = ½ mv2

  4. Lab #9: Roller Coaster Energy Audit CONSERVATION OF ENERGY PE lost = KE gain

  5. Lab #9: Roller Coaster Energy Audit Determine Total Energy Total Energy = PEg at start Dh1 h = 0 PEg = mgDh PEg = 0

  6. PROCEDUREDETERMINE PEg • MEASURE THE HEIGHT OF THE TRACK (h) ABOVE THE BASELINE (H = 0) AT .1m INTERVALS IN THE HORIZONTAL • CALCULATE PEg OF MARBLE FOR EACH HORIZONTAL POSITION

  7. Lab #9: Roller Coaster Energy Audit Determine PEg Dh1 Dh2 Dh3 etc. h = 0 PEg = mgDh PEg = 0

  8. PROCEDUREDETERMINE KE • POSITION THE PHOTOGATE TIMER AT EACH SUCCESSIVE .1 m MARKS FOR EACH TRIAL • RELEASE THE MARBLE FROM THE TOP OF THE TRACK, RECORD TIME OF BEAM INTERRUPTION • REPEAT TRIALS UNTIL PHOTOGATE HAS REACHED THE END OF THE TRACK

  9. Lab #9: Roller Coaster Energy Audit Determine KE V1 =0 photogate V2 V3 KE = ½ mv2 V = diameter/tphoto V = d/t V = ?

  10. DATA TABLE: Part 1

  11. GRAPH: PART 1

  12. GRAPH: PART 1

  13. LAB #9 Part 2 Create an IP Sim of Rollercoaster & Repeat

  14. Part 2: IP Sim Lab #9: Roller Coaster Energy Audit

  15. Lab #9: Roller Coaster Energy Audit Determine PE & KE at each X Position Dh1 PEg = 0 Dh2 etc. Dh3 h = 0

  16. DATA TABLE: Part 2

  17. GRAPH: PART 2

  18. GRAPH: PART 2: I.P.

  19. WRITE-UP • ABSTRACT: • BACKGROUND • METHOD • IP SIM SCREEN DUMP: EMBELLISHED • SHOW VECTORS • SAMPLE CALCULATIONS • PEg • VELOCITY • KE • DATA TABLES • GRAPHS • SCATTER GRAPH, CONNECT DATA POINTS • GRAPH ANALYSIS • CONCLUSION

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