# Lab 3 - Newton's Second Law_ PostLab.pdf - Lab 3 Newton's...

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10/18/2019Lab 3 - Newton's Second Law: PostLab1/14Current Score :100 / 100Due : Tuesday, October 1, 2019 10:20 AM EDTOverride: 100Lab 3 - Newton's Second Law: PostLab (PostLab)Alyssa ValentinePY 211, section 201, Fall 2019Instructor: Robert A. EglerWebAssignLast Saved : n/a Saving... ()The due date for this assignment is past.Your work can be viewed below, but no changes can be made.
10/18/2019Lab 3 - Newton's Second Law: PostLab2/141.18.75/25 points | Previous AnswersUse the exact values you enter to make later calculations.A group of students performed the same "Newton's Second Law" experiment that you did in class. For this lab, assume g= 9.81 m/s2. Theyobtained the following results:m1(kg)t1(s)v1(m/s)t2(s)v2(m/s)0.0501.20000.25001.73370.46940.1001.23000.32401.60450.76400.1501.15000.38201.45600.90520.2001.11000.42401.37721.1031where m1is the value of the hanging mass (including the mass of the hanger), v1is the average velocity and t1is the time at which vthe instantaneous velocity for the first photogate, and v2is the average velocity and t2is the time at which v2is the instantaneous velocityfor the second photogate.(a) Use Excel to construct a spreadsheet to do the following. (You will not submit this spreadsheet. However, the results will beneeded later in this problem.)(i) Enter the above data.(ii) Compute the acceleration, a, for each trial. (iii) Create a graph of the hanging weight m1gvs. the acceleration. (iv) Use the trendline option to draw the best fit line for the above data and determine the slope and y-intercept from it. (v) report your results below.1isslope = 0.7031 kg 0.703 kgy-intercept = 0.199 N 0.199 N
10/18/2019Lab 3 - Newton's Second Law: PostLab3/14(b) Use the information you obtained from your graph to determine the total mass of the system M= m1+ m2.
(c) Using the information you obtained in parts (a) and (b), predict what the value of the acceleration would be if the value of thehanging mass were increased to m1= 0.30 kg.
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