Abstract :The purpose of the experiment is to explore elastic and inelastic collisions in order to study the conservation of momentum and energy. The guided track, carts, photogates , 250 g weight and picket fences were the primary components used in the procedural part of the experiment. Each experiment involved the use of the photogates and picket fences to measure the initial and final velocities of both carts when they collide. The data was collected and translated to a graphical model for further analysis. The experiment was repeated for elastic and inelastic collisions with varying masses.
The calculations state that the percent discrepancies for inelastic collisions were 8. 75% and 19. 23 % for the equal mass and unequal mass respectively. The percent discrepancies for the equal and unequal mass elastic collisions were 22. 07% and 9. 78 % respectively. Both of the percent discrepancies for the collisions were close to the 10%-15% range which validates the concept of momentum conservation in inelastic and elastic collisions. In regards to conservation of energy, the calculations state that the percent discrepancies for inelastic collisions were 58. 33% and 81.
81% for the equal mass and unequal mass respectively. Both of the percent discrepancies were greater than 60% which indicates inelastic collisions are not as inefficient in conserving energy due to a loss in energy. The percent discrepancies for the equal and unequal mass elastic collisions were 36. 36% and 56. 25 % respectively. Both of the percent discrepancies for the elastic collisions were less than the percent discrepancies in inelastic collisions which validates the concept of energy conservation to be more efficient in elastic collisions. Introduction Objective:
The Term Paper on How The Mass Media Effects Teenage Girls part 1
How the mass media effects teenage girls Have you ever been fat? If you can eat everything you want to and still can hide behind the mop you are a very lucky person. Its a pity that great amount of people need to confine their food and are stick to different diets. You can ask: why these people suffer so much? Who force them to starve? Can you believe that they do such things by themselves? And ...
The principle of the experiment is to observe elastic and inelastic collisions to study the conservation of momentum and energy. Materials •Horizontal dynamics track •Collision and dynamics carts with picket fences •250 g Weight •Balance •Photogates connected to the Science Workshop interface Experimental Procedure The guided track, carts, photogates , 250 g weight and picket fences were the primary components used in the procedural part of the experiment. Each experiment involved the use of the photogates and picket fences to measure the initial and final velocities of both carts when they collide.
The data was collected and translated to a graphical model for further analysis. The experiment was repeated for elastic and inelastic collisions with varying masses. Results: Inelastic collision m1=m2Inelastic collision m1 ? m2Elastic collision m1=m2Elastic collision m1 < m2 Mass of cart 1 (kg)0. 26460. 26460. 26460. 2646 Mass of cart 2 (kg)0. 26460. 516780. 265230. 51678 Initial velocity of cart 1 (m/s)0. 303 +/- 2. 9e-40. 293 +/- 2. 2e-40. 292 +/- 3. 7e-40. 346 +/- 2. 1e-4 Initial velocity of cart 2 (m/s)0000 Final velocity of cart 1 (m/s)0. 143 +/- 4. 6e-40. 0890 +/- 4. 4e-40. 227 +/- 3.
1e-40. 160 +/- 3. 0e-4 Final velocity of cart 2 (m/s)1. 34 +/- 4. 0e-40. 0756 +/- 5. 2 e-400 pi? pKEi? KE Inelastic collision m1=m20. 08-0. 0070. 012-0. 007 Inelastic collision m1 ? m20. 078-0. 0150. 011-0. 009 Elastic collision m1=m20. 077-0. 0170. 011-0. 004 Elastic collision m1 < m20. 092-0. 0090. 016-0. 009 Data Analysis 1. Momentum of cart 1 before collision •p1i=m1*v1i 2. Momentum of cart 2 before collision •p2i=m2*v2i 3. Momentum of the system before collision •pi=p1i + p2i 4. Momentum of cart 1 after collision •p1f=m1*v1f 5. Momentum of cart 2 after collision •p2f=m2*v2f 6.
The Essay on Force And Perfectly Elastic Question
Question no 9) A package is dropped from a helicopter moving upward at 15m/s If it takes16 sec before the package strikes the ground, how high above the ground was the package when it was released if air resistance is negligible? Ans) 1000m Question no. 11) If A -B = 0, then the vectors A and B have equal magnitudes and are directed in the opposite directions from each other. Ans) False Question ...
Momentum of system after collision •pf =p1f + p2f 7. Relative Change in total momentum of system •pf- pi 8. Kinetic energy of cart 1 before the collision- KE1i •KE1i=(1/2)*(m1)*( v1i)2 9. Kinetic energy of cart 2 before the collision- KE2i •KE2i=(1/2)*(m2)*( v2i)2 10. Kinetic energy of system before the collision- KEi •KE1i + KE2i 11. Kinetic energy of cart 1 after the collision- KE1f •KE1f=(1/2)*(m1)*( v1f)2 12. Kinetic energy of cart 2 after the collision- KE2f •KE2f=(1/2)*(m2)*( v2f)2 13. Kinetic energy of system after the collision- KEf •KE1f+ KE2f 14. Relative change in total kinetic energy
•KEf -KEi Conservation of Momentum % Discrepancy=( |? p|/ pi)*100 Inelastic Collision m1=m2 •|-0. 007/0. 08| *100 = 8. 75 % Inelastic Collision m1 ? m2 •|-0. 015/0. 078| *100 = 19. 23 % Elastic Collision m1=m2 •|-0. 017/0. 077| *100 = 22. 07 % Elastic collision m1 < m2 •|-0. 009/0. 092| *100 = 9. 78 % Conservation of Energy % Discrepancy= (|? KE|/ KEi)*100 Inelastic Collision m1=m2 •|-0. 007/0. 012| *100 = 58. 33 % Inelastic Collision m1 ? m2 •|-0. 009/0. 011| *100 = 81. 81 % Elastic Collision m1=m2 •|-0. 004/0. 011| *100 = 36. 36 % Elastic collision m1 < m2 •|-0. 009/0. 016| *100 = 56. 25 % Discussion
The purpose of the experiment was to investigate elastic and inelastic collisions to study the conservation of momentum and energy. The graphs generated in class demonstrate the relationship between position vs time which was used to measure the initial and final velocities of the collisions to later calculate momentum and kinetic energy. In regards to conservation of momentum, the percent discrepancy was calculated by dividing the change in momentum by the initial momentum of the system (|? p|/ pi*100).
The calculations state that the percent discrepancies for inelastic collisions were 8. 75% and 19.
23 % for the equal mass and unequal mass respectively. Both of the percent discrepancies were close to the 10%-15% which indicates that the conservation of momentum is valid even with varying weights . The percent discrepancies for the equal and unequal mass elastic collisions were 22. 07% and 9. 78 % respectively. Both of the percent discrepancies for the elastic collisions were close to the 10%-15% range which validates the concept of momentum conservation in elastic collisions. In regards to conservation of energy, the percent discrepancy was calculated by dividing the change in energy by the initial energy of the system (|?
The Term Paper on Energy Conservation
Abstract: The gap between supply and demand of energy is continuously increasing despite huge outlay for energy sector since independence. Further the brining of fossil fuel is resulting in greenhouse gases which are detrimental to the environment. The gap between supply and demand of energy can be bridged with the help of energy conservation which may be considered as a new source of energy which ...
KE|/ KEi*100).
The calculations state that the percent discrepancies for inelastic collisions were 58. 33% and 81. 81% for the equal mass and mass respectively. Both of the percent discrepancies were greater than 60% which indicates inelastic collisions are not as inefficient in conserving energy. The percent discrepancies for the equal and unequal mass elastic collisions were 36. 36% and 56. 25 % respectively. Both of the percent discrepancies for the elastic collisions were less than the percent discrepancies in elastic collisions which validates the concept of energy conservation to be more efficient in elastic collisions.
There can definitely be more room for improvement in the experiment. The experiment can have higher quality validation of results if multiple trials were performed or if the class data were to be compared and averaged. Performing the experiments under a vacuum and frictionless setting would remove external variables that affect the data leading to more precise numbers. More accurate percent discrepancies illustrating laws of conservation can be achieved by adding more trials and including more sophisticated measuring tools.
These techniques would lead to more accurate results to reduce any experimental errors and to better validate the concepts of energy and momentum conservation. Conclusion The purpose of the experiment was to investigate simple elastic and inelastic collisions to study the conservation of momentum and energy concepts. The objective of the lab was met since the validity of the Law of Conservation of Momentum was confirmed by determining the relationship of energy and momentum conservation between inelastic and elastic collisions by utilizing percent discrepancy calculations.
The calculations state that the percent discrepancies for inelastic collisions were 8. 75% and 19. 23 % for the equal mass and unequal mass respectively. The percent discrepancies for the equal and unequal mass elastic collisions were 22. 07% and 9. 78 % respectively. Both of the percent discrepancies for the elastic collisions were close to the 10%-15% range which validates the concept of momentum conservation in inelastic elastic collisions. In regards to conservation of energy, the calculations state that the percent discrepancies for inelastic collisions were 58. 33% and 81.
The Essay on Investigation Into Elastic Potential Energy
Why and What I hope to achieve: I believe that the purpose of doing this is to allow me to demonstrate my understanding of Elastic potential energy. And the projectile concepts of the effect of changing potential into kinetic energy and for me to demonstrate my ability to apply elastic potential energy to a scientific investigation. What am I going to do and what will it prove: I am going to use ...
81% for the equal mass and mass respectively. Both of the percent discrepancies were greater than 60% which indicates inelastic collisions are not as inefficient in conserving energy. The percent discrepancies for the equal and unequal mass elastic collisions were 36. 36% and 56. 25 % respectively. Both of the percent discrepancies for the elastic collisions were less than the percent discrepancies in elastic collisions which validates the concept of energy conservation to be more efficient in elastic collisions. The data validates that the Law of Conservation of Mechanical Energy hold true in all types of collisions.
