1. THE BALLISTIC PENDULUM Students: Pedro N. Placido, Jr. Aziz Kenz. Ryan Ramnarine. SC 441H Spring 2002, Dr. Roman Kezerashvili

2. OBJECTIVES: 1. Study one-dimensional Inelastic Collision between two objects. 2. Determine the Linear Momentum. 3. Verify the principals of conservation of Mechanical Energy and Linear Momentum for Ballistic Pendulum Experiment.

3. Theory:

4. Formulas:

5. Formulas: (Velocity)

6. Formulas: (Kinetic energies)

7. Data: Table #1: Determination of the initial velocity of the ball with the ballistic pendulum. Mass of ball m, kg. Mass of pendulu m M, Kg. Distance y 1, m. Distance y 2, m. Height h = y 2 –y 1 Velocity of Ball- Pendulu m M, m/s 2. Initial velocity of ball v, m/s..07.266.072.161.8091.3216.34

8. Table #2: Determination of the velocity of the ball from Distance-Time measurements. Distance between photogates, m. Average time t, s. Average velocity of ball, m/s..08(.013 +.012) / 2 =.0125 (6.154 + 6.667) / 2 = 6.41

9. Table #3: Determination of the fractional loss of kinetic energy. Kinetic energy before collision K i, J. Kinetic energy after the collision K f, J. Fractional loss 1-( K f / K i ) Fractional loss 1-( m / (m + M)) Percent difference of the ratios. 1.410.29320.79210.7917.05%

10. Computations:

14. Conclusion: We conclude that both Linear Momentum and Mechanical Energy are conserved in Ballistic Pendulum Experiment. These concepts are also an important source to understand inelastic collisions. We conclude that both Linear Momentum and Mechanical Energy are conserved in Ballistic Pendulum Experiment. These concepts are also an important source to understand inelastic collisions.

15. THE BALLISTIC PENDULUM Thank You, to all our class mates, and to Dr. Roman Kezerashvili.