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Projectiles, Energy, Momentum

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Mass of car, pendulum, and ball using scale. Velocity at which ball is ... Use the velocity of the combo to find the total energy of the pendulum and ball ... – PowerPoint PPT presentation

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Title: Projectiles, Energy, Momentum


1
Projectiles, Energy, Momentum
  • Louis Aronowitz
  • Manish Amin
  • Russell Macalintal
  • Alex Kryszuk

2
Diagram
3
Purpose
  • To perform an experiment that will illustrate the
    concepts of physics such as
  • Conservation of momentum
  • Conservation of energy
  • Projectile motion

4
Data to be Collected
  • Mass of car, pendulum, and ball using scale
  • Velocity at which ball is launched (given)
  • Length of Car using meter stick
  • Height of the table using meter stick
  • Final height of the pendulum using meter stick
  • Velocity of car at top of track using Photogate
  • Experimental value of horizontal distance of the
    projectile using meter stick

5
Equations
  • MballVi MpendulumVi (Mball Mpendulum)Vcombo
  • Plug in the data to find the velocity of the ball
    and pendulum combination
  • E (1/2)McomboVi2
  • Use the velocity of the combo to find the total
    energy of the pendulum and ball
  • (1/2)McarV2 MgY (1/2)McarV2
  • Use the initial velocity of the car obtained from
    the photogate to determine the cars final
    velocity at the bottom of the track
  • ?Y Vit (1/2)gt2
  • Use the height of the table and Vi 0 to find
    the time it takes for the projectile to hit the
    floor
  • Vx ?X / t
  • Use the calculated time to find the other value
    for the final velocity of the car

6
Data Collected
  • Mass of Car 0.0255 kg
  • Length of Car 0.07 m
  • Mass of Ball 0.0765 kg
  • Mass of Pendulum 0.204 kg
  • Velocity of the Ball 6.46 m/s
  • Height traveled by Pendulum 0.035 m
  • Velocity of Car at the top 1.675 m/s
  • Height of the Table 0.885 m
  • Distance of Projectile 0.99 m

7
Results
  • Initial velocity of pendulum 1.76 m/s
  • Energy of the Pendulum and Ball combo 0.43 J
  • Energy of the car .092 J
  • Final velocity of car (conservation of energy)
    2.687 m/s
  • Time of flight 0.42 sec
  • Distance traveled by the projectile (accepted
    value) 1.142 m
  • Final velocity of car (kinematic equations)
    2.357 m/s
  • Work of Friction 0.021 J
  • error for distance of projectile 13

8
Sources of Error
  • Energy lost to sound.
  • Wind resistance.
  • Human error in measurement.
  • Entire setup was not aligned.
  • Inconsistency of the pendulum hitting the car.
  • Track isnt sturdy.
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