Lab 3 (1)

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University of Massachusetts, Lowell *

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1040

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Physics

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Dec 6, 2023

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pdf

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9

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Motion on an inclined plane Physics 1010-816 Date experiment was performed: Lab Partner: Objective : The object of the lab was to study the motion of an object moving on an inclined plane. We need to study, predict and quantify the motion of objects down an inclined plane.
Introduction: In this lab we studied what happens with motion on an inclined plane. We had to record the time of the object on the inclined plane and the force in which it hit the barrier. We then used that information in order to calculate the acceleration. Formulas: M = mass g = gravity Fy = y component of acceleration A = acceleration N = normal force Fx = x component of acceleration Σ = sum of all θ = angle
Uk = coefficient of kinetic friction Us = coefficient of static friction Fs = force of static friction Fk = force of kinetic friction N = normal force Apparatus and procedure: List of items: • The inclined plane
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• Photo gate • Cart • Scale
• String How the experiment was performed: During this lab we adjusted the inclined plane and recorded the speed, time and impact force. We had to move the plane into six different angles and record the date for each. Once we adjusted the plane one person would hold the cart by a string. Then another person would hit start on the computer and the cart would be released. After the cart came to a stop, we would stop the program and write down our data. Results:
Mass of cart = 0.671 kg The force acceleration is very similar in numbers. The difference in the two values keeps increasing as the values get higher.
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Analysis: The acceleration vs angle graph shows a linear trend in the data. As the angle increases so does the acceleration. The acceleration vs force graph is also a linear trend. As the force increases so does the acceleration also. I also measured the mass of the cart in class and converted it from grams to kilograms. I also found out that the difference between my force and acceleration grown exponentially. Discussion: 1. We were able to prove during the lab that as the angle increases so does the acceleration and the force. Newtons second law states force = mass * acceleration. We recorded both force and acceleration, then used the mass of the cart to make sure our numbers were accurate. Both of my graphs accurately depicted newton laws, and both showed a linear trend.
2. Some uncertainties could be the sensors being uncalibrated which would affect the time and force with which the cart hit with. Another uncertainty could be the inaccurate weight of the cart due to measuring error. This would affect my graph and make it so they wouldn’t correctly fit the trend. 3. One difficulty that I experienced was recording the data accurately. We found out that halfway into our lab that we went recording correctly since our force sensor was not properly calibrated. We also kept forgetting to hit the start button on the computer when we released our cart, so we had to repeat it again. Conclusion: The object of this lab was to observe the motion of an object on an inclined plane. We wanted to see how the angle would affect the acceleration of the object and the force of the object. We found out that as the angle gets larger so does the acceleration and force. A linear relationship was found between the angle and the acceleration. It was also found for the angle and the force.
Questions: 1. The maximum value of the angle (θ) for the block not to move is 26.57 degrees. Us = .5 My results show that an increased angle is required 2. The minimum angle for the block to begin moving is 14.1 degrees. As I increase the angle for force of kinetic friction becomes much smaller. Also as the kinetic friction force becomes smaller the acceleration increases.
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