This is PHYS lab questions. A) fill the table B) For each of your trials, determ
ID: 1778977 • Letter: T
Question
This is PHYS lab questions.
A)
fill the table
B) For each of your trials, determine if linear momentum and kinetic energy are conserved. Describe what information you used to determine this
C) Assume your data suggests that linear momentum and kinetic energy are not conserved. Describe at least three sources of discrepancy that might cause this to be so.
D) Which, if any, of your trials were elastic? Which trials were inelastic? To what data can you refer to justify your answer?
Trial # . Mass Cart #1 kg Mass Cart #2 [kg] Initial Velocity Cart #1 [m/s) ." Initial Velocity Cart #2 [m/s) ." Final Velocity Cart #1 [m/s) Final Velocity Cart #2 [m/s) . Initial Momentum Cart #1 [kg*m/s) Initial Momentum Cart #2 [kg*m/s) . Final Momentum Cart #1 kg*m/s] .. Final Momentum Cart #2 [kg*m/s] +, Total Initial Momentum [kg*m/s) Total Final Momentum (kg*m/s] Change in momentum [kg*m/s] Initial Kinetic Energy Cart #1 [] Initial Kinetic Energy Cart #2 [] ' Final Kinetic Energy Cart #1 [J] .' Final Kinetic Energy Cart #21] Total Initial Kinetic Energy [J] . Total Final Kinetic Energy .. Change in Kinetic Energy ] 521.6 g 523 g 0 0 4.634E1 5.081E1 1013.1g 523g 0 0 5731 . 4.506E2 3 1013.1 g 523 g 0 0 3.243E2 4.116E2Explanation / Answer
the following is the filled table
mass in cart 1 0.5216 1.0131 1.0131
mass in cart 2 0.523 0.532 0.523
iniital velocity cart 1 0 0 0
initial velocity cart 2 0 0 0
final velocity cart 1 46.34 57.31 32.43
final velocity cart 2 50.81 450.6 411.6
initial momentum cart 1 0 0 0
initial momentum cart 2 0 0 0
final momentum cart 1 24.17 58.06 32.854
final mmentum cart 2 26.57 239.71 215.2668
total initial momentum 0 0 0
total final momentum 50.744 297.779 248.121633
initial KE cart 1 0 0 0
initial KE cart 2 0 0 0
final KE cart 1 12.08 29.03 16.4274165
final KE cart 2 13.28 119.85 107.6334
total initial KE 0 0 0
total final KE 25.372 148.88 124.0608165
change in KE -25.37 -148.88 -124.06081
B. from the data, KE and momentum is not conserved
C. three sources of discrepancy
1. error in data entry : as intiial velocities of both cart 1 and cart 2 are 0, there might be an error in data entry
2. external force involved : as both carts start from rest and reach certain speeds, there can be an involvement of an external force
3. instrumnent errors : every instrument has an error because of least count
D. The data is not sufficient to know if the trails wele elastic or plastic
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