Procedure: 1. Describe the method you used to test your hypothesis. 2. What is a controlled experiment? 3. Does your procedure represent a controlled experiment? Explain why or why not. 4. WHY is it necessary to perform controlled experiments? Data: 1. Present a neat and appropriate data chart. Be sure to label columns and include units. 2. Present a graph of your data. Label axes and include units. T vs 1. and T and vs. 1. 3. Take enough data to draw a reasona ble conclusion. 4. Determine the slope of the graph of T2 vs. 1. 5. From the slope, calculate the value of the constant, g, acceleration due to gravity on earth. Conclusion: 1. State whether your data support or fails to support your hypothesis.Length of Length of Time for 10 Time for 1 (SEC. ) Pendulum (cm.) Pendulum (m.) oscillations (sec.) t oscillation (sec.) l1 1 = 11 / 100 Period, T = t/ 10 20 0. 20 9.$5. 819.38 0. 948 0. 898 25 0.25 10.25, 10, 41, 1035 1. 033 1.067 30 10.30 11. 36, 11.33, 11.26/ 1. 13 1 1.279 3 9 0.38 11 81, 11 86, 12.101 1.199 1.937 40 10.40 12. 80, 12. 75,278 1.277 1.630