Simple Pendulum Experiment 1. What are the possible source of error in experiment? 2.a Explain how mass of the pendulum bob is related/not related to the experiment. 2.b Explain how length of the pendulum related/not related to the experiment. Also how does it help to verify the earth's gravity. 3. Summarize/Conclude the expected outcome of the experiment using the relationship of the factors and how it verifies the earth's gravity.

5. We usually assume that the mass of the pendulum arm is negligible compared to the mass hung from it. But if not negligible, does the mass of the string increase or decrease the period of motion? (Hint: consider the equivalent force diagrams shown. How does including the string's mass affect the center of mass of the system? What happened to the period T in our experiment when the pendulum's length was shortened?). a. The period decreases. b. The period increases. c. The period stays the same. M.S

Select the correct one.

Use the following prompt for questions 1-2. Alexandra and Sal are conducting an experiment to study pendulums. In their first experiment, Alexandra and Sal changed the length of the pendulum and measured its period. In their second experiment, the mass of the pendulum bob was varied, and period was measured. 1. Before running the experiments, Sal hypothesized that increasing the mass of the pendulum would result in an increase in the pendulum's period. Was Sal correct? A. Sal was correct because mass is the only variable that will affect the period of the pendulum. B. Sal was correct because mass and length both affect the period of the pendulum. C. Sal was incorrect because only the length of the pendulum will affect the period of the pendulum. D. Sal was incorrect because only the initial angle will affect the period of the pendulum. inate Education TM, Inc.