-PHYSICS LAB 1: THE PENDULUM PROBLEM: WHAT FACTORS AFFECT THE PERIOD OF A PENDULUM? Definition: Any process that repeats itself in a regular manner is called PERIODIC. The amount of time for one repetition is the PERIOD (T). Materials: Ring Stands, Mass, String, Timer, Calculator, Ruler w/centimeters

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 T2 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