Using the link provided " https://phet.colorado.edu/sims/html/pendulum-lab/latest/pendulum-lab_en.html " could use help with data table 4, as well as numbers 1-6.

Questions: 1. What are the possible sources of errors in this experiment? 2. Would the period of a particular pendulum be the same on the moon as on Earth? Explain. 3. What effect does the mass of the ball have on the period of a simple pendulum? What would be the effect of replacing the steel ball with a wooden ball, a lead ball, and a ping pong ball of the same size? 4. What role, if any, does air resistance have on your results? Explain your reasoning. 7 5. Would you conclude that Galileo was correct in his observation that the period of a simple pendulum depends only on the length of the pendulum? 6. From the data table 3, explain why we have to have small angle oscillations to do the experiment 1 and 2Procedure (The effect of angle 0 on the period T of oscillation): As mentioned in the theory, the pendulum equation that we want to test is valid only for small angles of 0. For the first measurement, you will test this expectation by finding the period of oscillation at 3 different angles of release: 0=15', # =30", and =80" . For a single length of the string (Z = 50cm), use the timer (not the stopwatch) to measure the period of the pendulum, starting from each of the three different starting angles. Also, remember that the angle 0 is defined as the angle away from the vertical! Record your data in the following data table 3. The theoretical value of the period (T) can be calculated using the following equation. I =2x + - sin 9 + ... 6 Data Table 4: T actual (9) T experimental(S) Percent Error (%%) 150 30 80"Data Table 3: M ( kg) Period (T), (9) H 0.25 0.713 0.50 0.7115 0.75 0.7105 4 1.00 0.707 1.50 0.7175