Download presentation
Presentation is loading. Please wait.
Published byJessica Armstrong Modified over 9 years ago
1
Starter Hint: consider f = i + i t + ( 1/2) t 2 Hint: consider f = i + i t + ( 1/2) t 2 A student records the motion of a spinning object and obtains a theta vs. time graph. The computer gives a fit: (t) = At 2 + Bt + C where A = 6.50, B =.001 and C = 0.00 A student records the motion of a spinning object and obtains a theta vs. time graph. The computer gives a fit: (t) = At 2 + Bt + C where A = 6.50, B =.001 and C = 0.00 What is the experimental value of the angular acceleration ? (1/2) = 6.50 so = 13.0 rad/s 2
2
Practice Recall from the circular motion study that: f = i + i t + ( 1/2) t 2 f = i + t Recall from the circular motion study that: f = i + i t + ( 1/2) t 2 f = i + t You will investigate these relationships.
3
Procedure 1.Connect the smart pulley to the Pasco interface. 2.Start Data Studio. 3.Select “ Create experiment”. 4.Add the smart pulley sensor. 5.On the 2 nd measurement tab select “ angular velocity and angular position” using radian measure. 6.Place a string and a weight hanger over the pulley as shown. Hold the end of the string without the pulley. 7. Press collect and release the string.
4
Analysis A.Obtain a theta vs. time graph. Fit a curve to your graph and sketch the graph. B.Obtain a angular velocity vs. time graph. Fit a line to the graph and sketch the graph. C.Find the experimental acceleration from your theta vs. time graph. Call this value E 1. D. Find the experimental acceleration from your vs. time graph. Call this value E 2. E. Find the % difference between E 1 and E 2.
5
Questions Write 1 or 2 paragraphs explaining the results ( your two graphs ) including an explanation of: 1. How you obtained the angular acceleration from each graph. 2. How the graphs compare to the y vs. t graph and v vs. t graph for free fall.
6
Lab Report Checklist A.Cover Sheet B.Two Graphs C.Both accelerations and the percent difference. D.Questions E.Summary
7
EXIT A student records the motion of a spinning object and obtains an vs. time graph. The computer gives a fit: (t) = At + B where A = 8.50 and B = 1.00 A student records the motion of a spinning object and obtains an vs. time graph. The computer gives a fit: (t) = At + B where A = 8.50 and B = 1.00 What is the experimental value of the angular acceleration ?
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.