- At the lower left side of the screen select ruler, stopwatch, and period timer
- On the upper right side of the screen, set the mass 0.5 kg, measure the length of the string using the yellow scale to 0.7 m, and set the gravity earth and set it at 9.81 m/s2 and friction at None
- Pull the pendulum bob to the right about 100 and let it swing
- Click on the period and you will read 1.6847 s
- Record the time taken for 20 oscillations of the pendulum. For the pendulum to start from the right side and go to the left side and come back to the left side is one oscillation. Count twenty of this and read the timer. If you want, you can use your phone to read the time it takes for 20 oscillations. Make sure one oscillation is for the pendulum from right to left and comes back to right.
- Divide the time you read by 20 to get the period. Compare this value from the reading 1.6847.
- Find the Theoretical value of T by ( L =.7 m and g =9.81 m/s2
- Find the percent error (% error), where the accepted value is the theoretical T and the experimental value ( The time it took for 20 oscillations divided by the time it takes for 20 oscillations
- Change the mass to 1.0 kg and 1.5 kg keeping everything as is and record the period for each mass.
- Does the period Change? Give reasons for your answeranswer
- Find the frequency, f (f = 1/T)
- Open the given phet.Colorado.edu web site above
- Select Lab
- At the lower left side of the screen select ruler, stopwatch and period timer
- On the upper right side of the screen , set the mass 0.5 kg, measure the length of the string using the yellow scale to 0.7 m, and set the gravity earth and set it at 9.81 m/s2 and friction at None
- Pull the pendulum bob to the right about 100 and let it swing
- Click on the period and you will read 1.6847 s
- Record the time taken for 20 oscillations of the pendulum. For the pendulum to start from the right side and go to the left side and come back to the left side is one oscillation. Count twenty of this and read the timer. If you want, you can use your phone to read the time it takes for 20 oscillation. Make sure one oscillation is for the pendulum from right to left and come back to right.
- Divide the time you read by 20 to get the period. Compare this value from the reading 1.6847.
- Find the Theoretical value of T by ( L =.7 m and g =9.81 m/s2
- Find the percent error (% error), where the accepted value is the theoretical T and the experimental value ( The time it took for 20 oscillations divided by the time it takes for 20 oscillations
- Change the mass to 1.0 kg and 1.5 kg keeping everything as is and record the period for each mass.
- Does the period Change? Give reasons for your answer
- Find the frequency, f (f = 1/T)
