Conservation of Energy




          Welcome to Gerry's web page. This page is one of out assignment for APPC class. My web page is going to about the lab that I did when I was in APPB class. It's about conservation of energy. With demonstration and calculation I will show you how energy is always conserved.
 
 

         What I did for the lab was I threw a ball upward and we measured the time, height and velocity of the ball. Using that we calculate the Potential energy and Kinetic Energy to find the total energy of the ball. following is the data that I got.
 
 
 
 

Position
Time (S)
Height (m)
Velocity (m/s)
After Release
.4
.827
3.283
Top of the path
.75
1.415
.95
Before catch
1.1
.812
3.173

 
 

Using the following formulas we found the PE, KE, and the total energy of the ball. (Mass of the ball is .453 kg)

                           KE = .5mv2           PE = mgh           TE = PE + KE
 
 
 
 

Position
Potential Energy
Kinetic Energy
Total Energy
After release
3.671
2.441
6.112
Top of the path
6.281
.002
6.283
Before catch
3.604
2.28
5.884

          Conclusion : By completing this lab, we realize that the total energy is conserved all the times. The reason the TE is not exactly same is because that there is human error during the procedures. But logically it should all come out the same.
 
 




        Links :1. D.A.Y's APPC Page

                     2. The Mechanical Universe

                     3. The Physics Classroom

                     4. Catholic Memorial Physics

                     5. Physics

                     6. AP Physics B Lab

                     7. AP Physics The Bowling Ball Lab
 
 
 
 

          Contact : Gerry Ahn

                       David A. Young