Report On Force Of Gravity

Submitted By Kawaii-Aileen
Words: 806
Pages: 4
Open Document
Lab No: 01

THE PHYSICS LABORATORY

Name: Nanting Zheng

Date: 02/04/2014

Purpose: To learn to use the computer, interface, and a photogate sensor to conduct a scientific experiment that determines the velocity and distance of a falling object with respect to time. Students will be able to compare their data with theoretical values such as the force of gravity by performing multiple trials of the experiment to calculate the force.

Apparatus: A picket fence, photogate, Lab Pro, and the Logger pro Software.

Theory: A force may be thought as an influence that tends to change the motion of an object. One can easily find the theoretical value of force by multiplying the acceleration of gravity, ‘g’, which is 9.8 m/secˆ2 by the mass of the object. However, in this experiment, the student can only obtain a close estimate of the value for ‘g’ by finding the average of the slopes of the graphs and taking the standard deviation into consideration. The mass of the picket fence should also be reconsidered to eliminate as much error as possible. The error propagation formula below will assist in determining the value of F while taking any uncertainties into considered.

Where,
= Uncertainties associated with force
C= Calculated Force by multiplying g*m
= The smallest increment on the scale for measuring the picket fence
A= The mass of the picket fence
B= Standard deviation
B= The average value of g

Procedure:
1. Setup the photogate as shown below and connect the photogate into the input of the LabPro interface that is connected to a PC.

2. Open the file entitled ‘Lab #1 The Computer in the Laboratory’in the “Physics 1 Labs”folder.

3. Check to see if the photogate is working by either looking at the Gate State reading in the status bar at the top left of the screen or by checking the red indicator light of the photogate itself.

4. Click on Collect to start data recording. Hold picket fence perpendicularly to the photogate as shown above and release it from above.

5. Click Stop to end data recording and copy and paste velocity and time into Excel.

6. Repeat steps 4 and 5 for 5 more times and for the last trial, remember to copy the distance and time into excel.

Data and Calculations:

Table 1: The velocity of the picket fence with respect to time
Time (s)
Velocity (m/s)
0

0.014514

0.03592
1.559165
0.0473

0.065395
1.860421
0.074795

0.0904
2.133711
0.99195

0.112595
2.321932
0.120495

0.13354
2.522808
0.140796

0.152442
2.716307
0.159095

0.170402

0.176495

Graph 1: The velocity of the picket fence with respect to time

Table 2: The distance of the free fall respect to time
Time (s)
Distance (m)
0

0.014514

0.03592
0.05
0.0473

0.065395
0.1
0.074795

0.0904
0.15
0.099195

0.112595
0.2
0.120495

0.13354
0.25
0.140796

0.152442
0.3
0.159095

0.170402
0.35
0.176495

Graph 2: The distance of free fall vs time elapsed

Table 3: The acceleration values for trials
Trial No.
Slope
Accel. “g”
(m/secˆ2)
Average “g”
(m/sec ˆ2)
Standard deviation
1
9.9061
9.9061
9.7206
0.2651
2
9.5684
9.5684
Show More

Related Documents: Report On Force Of Gravity

Chemical Reaction and Energy Changes Essay

WestonCI@tdsb.on.ca ------------------------------------------------- SCH4U Chemistry, Grade 12, University Preparation ------------------------------------------------- Course Outline Teacher: Mr. Shopman Room: 331 ------------------------------------------------- Description/Rationale This course enables students to deepen their understanding of chemistry through the study of organic chemistry, the structure and properties of matter, energy changes and rates of reaction,…

Words 574 - Pages 3

A Level Chemistry Essay

A Level Chemistry Entry Requirements: BB in Core and Additional Science or B in Chemistry and C in Maths. In addition, a D Grade in AS Chemistry is needed to progress to the A Level. Wainwright, Miss J Rigby Exam Board: AQA Teachers: Mrs V Bates, Mr A Conheeney, Mr N Barnet, Mr P Carter, Mrs J Timetable Organisation: 5 periods of 1 hour length each week for two years, taught by 2 teachers. Students in Year 13 also have one hour of directed study time each week. Main Syllabus Area A Level Chemistry…

Words 422 - Pages 2

Nt1310 Unit 9 Final Project

Introduction Students often choose a major in biology or chemistry to prepare for medical school or to focus solely on working in a lab and doing research. Many, however, do not realize that their responsibilities for that major include many laboratory reports and papers. Methods To examine writing in this field in more detail, I collected two kinds of data. First, I interviewed a professional in my field, Dr. Zhaohua Dai of the Department of Chemistry and Physical Science of Pace University. Although…

Words 833 - Pages 4

CM1501 Expt 2 Essay examples

National University of Singapore CM1501 Organic Chemistry for Engineers Lab Report Experiment 2: Separation and Identification of Two Organic Compounds 10th October 2013 Abstract This experiment involves the separation and identification of 2 organic compounds (1 Neutral Compound and 1 Acidic Compound) in a mixture. Separation techniques used in this experiment include solvent extraction, simple distillation and recrystallization using a suitable solvent determined through a solubility…

Words 1276 - Pages 6

Synthesis Of Sallicylic Acid From Wintergreen Oil

Experiment four: Synthesis of Salicylic Acid from Wintergreen Oil Organic chemistry 331 Lab of 10/8/13 Abstract: Methyl salicylate is used as a flavoring because of its pleasant penetrating odor. Methyl salicylate was heated under reflux with the addition of NAOH as a solvent and cooling the mixture with H2SO4. Then the product was purified and the mass of the product weighed 2.6914g and the melting points of the purified product ranged from 141-145 degrees C and the mixed product (salicylic…

Words 468 - Pages 2

DA sample report Essay

Sample lab report for Experiment 194.1 in Palleros (pp. 398-a00) Reaction of 9-Anthraldehyde with Maleic Anhydride via the Diels-Alder Reaction Sam P. Le January 18,2013 Purpose The purpose of this experiment was to demonstrate the utility of the Diels-Alder reaction by reacting 9-anthraldehyde with maleic anhydride to form a9-anthraldehyde-maleic anhydride adduct. The 9-anthraldehyde-maleic anhydride adduct was characterized by melting point determination, infrared (IR) spectroscopy, UV-Vis…

Words 1492 - Pages 6

The Scenario Essay

packaged in cardboard boxes to be sold to wholesalers. However a report has come in that an unusual odour and taste has come from a bottle in a recently produced batch. So therefore the purpose of the investigation in which we have been employed to carry out is to test and identify the functional group of a suspected unknown organic compound which has contaminated the tested water, through the process of organic chemistry Introduction Organic compounds, is the chemical study of carbon and its compounds…

Words 356 - Pages 2

A Report On Email Function In Virtual University

Schemes Midterm 1 (Oct 22th MRN Aud) 15% Midterm 2 (Nov 26th MRN Aud) 15% Final Exam (date and location to be announced) 35% Homework (using Learnsmart/Connect) 10% Total Lecture Component 75% Laboratory Component (lab reports and performance) 25% General Information : Lectures Tuesday 10:00-11:30 (MRN Aud) Thursday (MRN Aud) Labs (check with the Faculty for starting date) (MRN-labs 3rd floor, check your own schedule)…

Words 443 - Pages 2

research essay

presumes that life may be seeded from space throughout many worlds and many solar systems. By implication, the panspermia theory supposes that life should be common wherever there are physical conditions that are capable of supporting life. This report addresses the possibility that life may have originated in space rather than on Earth, and considers the evidence in support of the various theories about how that may have happened, if it did. Such theories are called “panspermia” theories from…

Words 1789 - Pages 8

CHM 130 SP 15 SYLLABUS 1 Essay

FUNDAMENTAL CHEMISTRY CHM 130-231 SPRING 2014 Instructor Lale Cilenti, M.S. E-mail lcilenti@mohave.edu Phone Cell: 925-360-3116 TEXTS ONLY! Dates, days and times of the class This is a 100% online course with no required on-campus meetings. Due dates of assignments are firm. LATE WORK IS NOT ACCEPTED. All times are in AZ time. All assignments due by MIDNIGHT on date noted. Drop Period January 20, 2015 – January 27, 2015 Withdraw Dates: January 28, 2015 – April 27, 2015 Class Location…

Words 2373 - Pages 10