PHYSICS4A_2025_mcortez

Designing and creating the cart used in our presentation using materials scavenged at home.  helped organize the slides by inputting images of our computational graphs along with pictures of the cart and a video of both the cart and computational model running. Also helped with writing our goals and how we designed the cart slide. Put in photos of our labs we did into the presentation that were used to calculate values and towards creating the cart.  Stayed communicative with my group by creating our own discord group!  Provided a video of the cart to help create the computational model of our cart. 

 Analysis Determine the final angular velocity of the ring/disk/shaft/spool system for each case after the weight hits the ground. How is this angular velocity related to the final velocity of the hanging weight?  Be sure to use an analysis technique that makes the most efficient use of your data and your time.  If your calculation incorporates any assumptions, make sure you justify these assumptions based on data that you have analyzed.   Conclusion In each case, how do your measured and predicted values for the final angular velocity of the system compare? They compare pretty well with 2 of them matching and trial 2 or pulley 2 being slightly off from the predicted value.  Of the three places you attached the string, which produced the highest final angular velocity?  Did your measurements agree with your initial prediction?  Why or why not?  What are the limitations on the accuracy of your measurements? Trial 1 which was the largest pulley prod...

 Measurement   Odd Tables:  Take the measurements necessary to determine the kinetic energy of the cart just before and after the impact with the bumper. Take data for several different initial heights. Analysis Calculate the efficiency of the bumper for the level track.  Does your result depend on the velocity of the cart before it hits the bumper? Conclusion What is the efficiency of the magnetic bumpers?  The efficiency was 90.68 +- 5.01%, it seemed that most trials were pretty high up there in efficiency with the lowest percentage being 89% which is not bad for the leveled track. The result does depend on the velocity of the cart since as the velocity increased the percentage went higher.    How much energy is dissipated in an impact? State your results in the most general terms supported by your analysis. Is the effect of friction significant? The average energy dissipated across all trials is 7.557 × 10^−4 J using the initial and final velocities...

  1. For each new block mass, calculate the magnitude of the kinetic frictional force from the measured t.  Also determine the normal force on the block. 2. Graph the magnitude of the kinetic frictional force against the magnitude of the normal force, for a constant angle of incline.  On the same graph, show your predicted relationship. 3. For each angle (h), calculate the magnitude of the kinetic frictional force from the measured t.  Also determine the normal force on the block. 4. Graph the magnitude of the kinetic frictional force against the magnitude of the normal force for a constant block mass.  On the same graph, show your predicted relationship. 5. Calculate the uncertainty in your experimental technique.   Do your two graphs agree? My two graphs do not agree, i don't know what happened with the second graph Conclusion:  What is the coefficient of kinetic friction for wood on aluminum?  How does this compare to y...

How do the predicted velocity and the measured velocity compare in each case?  Did your measurements agree with your initial prediction?  If not, why?  The predicted velocity from the video was mostly lower than the calculated velocity of the cart in all the runs. The percentage difference between the two values ranged from 12.13% to 27.42%. This shows that either the way the video analysis was done could've been not perfectly accurate or the theoretical calculation did not fully account for real-world factors such as friction and air resistance affecting the cart’s motion, timing inaccuracies in the video analysis or assumptions in the theoretical calculations like ignoring rotational inertia of the pulley. Does the launch velocity of the car depend on its mass?  The mass of the block?  The distance the block falls?  Is there a choice of distance and block mass for which the mass of the car does not make much difference to its launch velocity? Increasing t...

  Where do the two curves match?  Where do the two curves start to diverge from one another?  What does this tell you about the system?  The two curves appear to match at lower values of the middle mass (around 0.05 kg to 0.07 kg). They begin to diverge beyond 0.07 kg, around 0.09 kg and 0.11 kg, where the measured vertical displacement starts to deviate more. At lower masses, the system behaves as expected, following the theoretical model. What are the limitations on the accuracy of your measurements and analysis? The assumption of frictionless pulleys may not hold for larger masses and possible stretch in the string or deformation in the setup could introduce systematic errors. What will you report to your supervisor?  How does the vertical displacement of an object suspended on a string between two pulleys depend on the mass of that object? The vertical displacement generally follows the expected trend, but discrepancies emerge for larger middle masses. The r...