{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

ANSWER02 2010 - Lab Section Name Lab Instructor Instructors...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lab Section: ______ Name: ______________________________ Lab Instructor: ___________________ Instructor’s Signature: __________________ P2207 Lab Working Notes Questions 2-1 Cornell University, Fall 2010 Lab 2 Data A. Numerical Differentiation 1. From the Excel spreadsheet Ball : Note: You will only be able to enter your data into the bottom two cells of the "Value" column below AFTER you have completed the data fitting proceedure described in the boxed text on p.2-2 in the Lab Manual. Table Column Cell Address Excel Formula Formula with Conventional Symbols Value (s) D12 =B12-B11 0.02 D13 =B13-B12 0.02 (m) E12 =C12-C11 0.04 E13 =C13-C12 0.035 (m/s) F12 =E12/D12 2 F13 =E13/D13 1.75 G12 =$G$8+$G$7*B12 1.96 G13 =$G$8+$G$7*B13 1.77 What order of magnitude (i.e., power of ten) for the acceleration do the data-derived values in the above table suggest? Is that reasonable for free fall? . That’s roughly , so it’s a reasonable value for a falling object. 2. Record your value of from the straight-line fit to the data, including a ± error estimate based on how consistently you and your partners could arrive at a straight-line fit: The acceleration is about . Variations may be within about , indicating that the error in the fitting procedure is roughly . Print out a copy of your spreadsheet from Excel (one for each student) and attach it to this yellow sheet.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
P2207 Lab Working Notes Questions 2-2 Cornell University, Fall 2010 B. Play Ball: Experimental Data from a Bouncing Basketball and Beachball To get started, double-click on the icon "Bounce". Logger Pro will open, showing a layout of three graphs: x(t), v(t) and a(t). Before you aquire any data, you must first enter today's room temperature into the data acquisition program (Logger Pro): Select menu item "Experiment... Set Up Sensors > Lab Pro: 1". A window called "LabPro: 1" will open. Click on the "DIG/SONIC 1 Motion Detector" icon and select "Set Temperature". Enter today's room temperature (use the thermometer on the wall) and click "OK". Close the "LabPro: 1" window. Why did you need to do this? Because you are measuring position using ultrasound waves. The speed of sound depends on temperature, and the computer needs the correct speed-of-sound to use in its calculation of position.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}