6. Using the computed period squared of the pendulum, calculate the experimental value of acceleration due to gravity. 7. Take the average of the experimental value of acceleration due to gravity and compare it to the actual value by calculating the percentage error. 8. Make a graph of the square of period T2 against the length L of the pendulum. Draw the best-fit line through the plotted points on the graph and calculate the slope of the best- fit line. 9. Multiply the reciprocal of the slope of the graph by 4n2 and compare it to the average of acceleration due to gravity obtained experimentally by calculating the percentage difference. Procedure (B): Measuring 9 using free fall method 10. Hold a small ball at about 1.000 m above the floor; record this height. Drop the ball, and measure the time of fall using the digital stopwatch. Repeat 2 more times and calculate/record the average time in the table. 11. Change the height of fall for four (4) more trials. Increase the height of fall by 0.250 m. 12. Calculate the value of g for each height and compute the average. 13. Repeat steps 10-12 using a larger ball; record the data. 14. Calculate the average of g obtained in using the small and large balls. Compare the results to the actual value by calculating the percentage error. Record the results in the data sheet. IV. CALCULATIONS 1. Show the sample calculations in a separate sheet of short bond paper