The Pendulum

A. Set up a pendulum with a photogate set to read the period.

B. Start the data collection to read the period. Record the period and the length of the string.

C. Adjust the string to a new length and record the new period and length.

D. Repeat for 5 different trials.

Setting Up for Pendulum Timing

1. Hook up the Labquest to the computer and start LoggerPro.

2. Go to Experiment> Set Up Sensors> Show All Interfaces

3. Click on the picture of the Photogate and select “ Pendulum Timing”

Data Table and Graph Table

ln(L) ln(T)   

   

   

   

   

Data table

Table for Graphing

Trial 1 Trial 2 Trial 3 T LPeriod (s) Period (s) Period (s) Average Period Length (m)

         

         

         

         

         

DT DL

   

Questions and Analysis

1. ln(t) vs ln(L)

2. Get the slope from the best linear fit.

3. Find the coefficient for the equation T =aLn

4. Find the value for a in the same equation.

5. Use a to find a value for the acceleration due to gravity.

Report Checklist

A.Tables

B. Graph with linear fit.

C. Values for n and a.

D. Value for g.

E. Summary