Physics Lab report #1

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The City College of New York, CUNY *

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Course

20300

Subject

Physics

Date

Apr 3, 2024

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pdf

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Celine Lacmanen Lab Partner: Bonu Guliamova Physics 203 - Section LM1 Professor Raspopin Lab TA Mohammed Lab #1 Measurements Introduction: Within most science courses, measurements are measured using SI units which include but are not limited to: length, mass and time. Length measures how long an object is or how far away a city is, length goes hand in hand with distance. Mass and matter correlate with each other as matter is defined as anything that can take up space. Mass measures the amount of matter in an object or a particle. Time helps keeping track of daily duties as well as measures how long a reaction will take to occur. All three of these measurements, length, mass, and time are crucial measurements that students need to be comfortable and familiar with working with them. The students were tasked with being able to measure different objects using the three units of length, mass and time. While conducting the experiment it was essential to input the data into Microsoft Excel in order to identify the types of relationships each object had with the designated unit of measurement. My TA allowed students to work in groups of 2-3 thus, my partner and I worked collaboratively to measure and enter data. Procedure: The materials utilized were the tools and objects that were provided along with Microsoft Excel. The materials included: 1 meter stick, string, a digital caliper, toothpicks, two circular objects, a timer, paper tape, a wood block, 12 inch ruler, a paper fish, and a 500 gram object. - To start the experiments, first my partner measured my head circumference as well as how many times my heart beats per minute. In order to measure the head circumference we used the paper tape measure in units of centimeters and wrapped it around the head. After measuring my head, my partner then checked my pulse and we calculated how many beats per minute my heart beat, using the stopwatch. When my partner was finished measuring my head circumference as well as my heart beat I then measured her wrist and neck circumstances. - Moreover, the other part of the first experiment was to measure the three circular objects which consisted of: the small disk, the big disk and the mass object. My partner and I measured the circumference along with the diameter of each object then input our data into excel. The data interpreted by excel displayed a scatter plot, which signifies some type of relationship of each object. Finally, we drew a trendline in order to identify the slope of the line and use it as the estimate of pi. -The second measurement required us to use toothpicks to create an approximately circular shape. We measured the circumference by counting the number of sticks used in the outside shape and measured the diameter with the amount of toothpicks that fit across the inside of the shape. We then calculated the estimate of pi by dividing both measurements by each other.

-The third measurement was not particularly a physical measurement rather a virtual one as it included google maps. My partner and I had to pick places on the map to make a virtual circle in order to calculate the circumference and diameter. We used the maps interface to obtain the circumference and diameter of Columbus Circle, Cherry Hill and Bethesda Fountain. We also entered these values into excel to find an estimated value of pi. -The fourth measurement was the paper fish which required us to use the 12 inch ruler. After finding the exact length of the paper fish, we then had to report the length of uncertainty. -The fifth experiment dealt with the density of the wood block. We first had to measure the mass of the wood block which contained weighing the block on the vernier caliper. After capturing the mass of the wood block, we then started measuring the height, length and width of the object utilizing the meter stick. In order to calculate the density of the wood block, my partner and I multiply the height, length and width to get the volume then divide using the density formula. Density is equal to mass over volume. -Finally the last experiment consisted of a time of oscillations for a basic pendulum. We had to measure the amount of the time it took for the pendulum to swing back and forth once at different lengths. The range of length was between 10 cm and 1.5 meters thus, my partner and I chose 150cm which is equal to 1.5 meters then decreased by 25 cm. The 5 different lengths of measurement we chose were 150 cm, 125 cm, 100 cm, 75 cm and 50 cm. We began with the largest length 150 cm and attached the mass object to the end. My partner swung the pendulum and I recorded the time it took for the pendulum to complete one full swing. At the end the data was plotted on excel to show the time for one oscillation as a function for the length of the swing. Data: Measurement 1a Head Circumference: 57 cm Heartheart: 110 bpm Measurement 1b Wrist Circumference: 14 cm Neck Circumference: 31.5 cm Measurement 2: Circular objects Object Diameter Circumference Mass object 3.2 10.048 Small Disk 4.3 13.502 Large Disk 6.5 20.41 Estimate of Pi: 3.14