Lab 2 report

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Broward College *

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2048L

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English

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Apr 30, 2024

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docx

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Dang 1 Prof. Ramos PHY2048L February 10, 2024 Unit 2 Lab: Photographic Analysis of a Falling Object Abstract: This laboratory gave me experience measuring the displacement of a ball dropped from a height using photographic data and my computer's mouse positioning mechanism. To calculate acceleration due to gravity on Earth, use two displacement measurements, the time between them, and one of the five kinematic equations that describe one-dimensional motion. Multiple trials were performed, resulting in fewer errors because accuracy improves with averaged data. I examined the formulas I'd need and then used my obtained data to perform each task. I conclude that I have mastered the purpose of this lab, which was to provide accurate solutions to ball calculations, as well as part two of this lab activity, which was to determine my response time and ensure that I had accurate and precise data. This activity focuses on the use of technology in physics, as well as the importance of accurate and precise measurements in avoiding biased data. Introduction:

Dang 2 The goal of this lab is to see if it is possible to experimentally determine the value of gravitational acceleration. In this lab, I will use various strategies, such as unit conversion, kinematic equations for free fall, and percent error. Also, I conducted three attempts to check the quality and precision of my data sets for both components. This lab was developed to demonstrate how technology is employed in physics. This lab included many of the main topics discussed in this part, allowing me to gain hands-on experience with the materials. I was able to see how gravity can alter data and generate errors in findings if it is not factored into the computations. Having said that, many trials were conducted before I was able to narrow my margin of error and obtain the proper data. General Principles: This laboratory assignment was created to allow students to quantify the displacement of a tennis ball dropped from a height using photographic data and their computer's mouse positioning system. The distance an object travels between two events can be used to compute the time interval between them. Part two of this experiment involved estimating our hand's reaction time using one-dimensional kinematics and free fall. This lab also covered principles and ideas such as free fall, motion with constant acceleration, and displacement. Displacement refers to an object's change of location. The meter is the SI unit for displacement. Displacement accounts for both direction and magnitude. In free fall, objects undergo continuous acceleration if there is little air resistance. "On Earth, all free-falling objects have an acceleration due to gravity, which averages 𝑔 = 9.81 m/s2g=9 .81m/s2." (Ling, P.3) If an object is in free fall in an upward direction, it is typically interpreted as having positive displacement, acceleration, and velocity. Then there's one-dimensional motion with constant acceleration, for which you need to identify known quantities and then use appropriate equations to solve for the unknown. The

Dang 1 kinematic equation is typically employed to solve these unknowns, based on the known and unknown values. Kinematics is defined as motion without addressing the reasons. However, this experiment was limited to motion in a straight line, commonly known as one-dimensional motion. In part one of this experiment, we also looked at the tennis ball's acceleration. Acceleration can result from a change in magnitude, direction of motion, or both. This experiment allowed us to view practically every section of this chapter in a real-world context. Methods: Part 1 will rely heavily on photographic data files. The first step will be to determine a conversion factor between mouse units and meters. After that, the y-coordinates of the ball in the first and last photographs will be measured five times (five times for each image), and the findings will be saved in a data table. The difference in position between the first and last images will then be calculated and converted to meters, allowing the by value of gravity to be determined using y = 0.5gt2. Finally, this estimate will be compared to the actual theoretical value to determine the percentage inaccuracy. Part 2, an assistant will hold a meter stick while my open hand is aligned with the bottom of the stick. The assistant will then release the stick while I attempt to catch it, and the top of my hand will be measured on the meter stick. This will be repeated five times. Following that, the average reaction time will be computed by first ignoring air resistance and then measuring air resistance (the mass of the meter stick must also be measured). The percentage error will be calculated, and the findings will be compared to the average reaction time of humans.

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