I need help with the pendulum lab step by step.

Experiment 14 PRELIMINARY QUESTIONS 1. Make a pendulum by tying a 1-m string to a mass. Hold the string in your hand and let the mass swing. Observing only with your eyes, does the period depend on the length of the string? Does the period depend on the amplitude of the swing? 2. Try a different mass on your string. Does the period seem to depend on the mass? PROCEDURE (YOU WILL MAKE YOUR PENDULUMS IN THE PROGRAM) 1. Use the ring stand to hang the 200-g mass from two strings. Attach the strings to a horizontal rod about 10 cm apart, as shown in Figure 1. This arrangement will let the mass swing only along a line, and will prevent the mass from striking the Photogate. The length of the pendulum is the distance from the point on the rod halfway between the strings to the center of the mass. The pendulum length should be at least 1 m. 2. You can vary the length of the pendulum, the mass on the pendulum and the amplitude within the program. 5. Now you can perform a trial measurement of the period of your pendulum. Pull the mass to the side about 10 from vertical and release. Click on the period button and measure the period for at least five complete swings. Use this technique to measure the period under a variety of conditions. Part I Amplitude 6. Determine how the period depends on amplitude. Measure the period for five different amplitudes. Use a range of amplitudes, from just barely enough to unblock the Photogate, to about 30. Each time, measure the amplitude using the protractor so that the mass with the string is released at a known angle. Repeat Step 5 for each different amplitude. Record the data in your data table. ( The program will measure the angle) Part II Length 7. Use the method you learned above to investigate the effect of changing pendulum length on the period. Use the 200-g mass and a consistent amplitude of 20 for each trial. Vary the pendulum length in steps of 10 cm, from 1.0 m to 0.50 m. If you have room, continue to a longer length (up to 2 m). Repeat Step 5 for each length. Record the data in the second data table below. Measure the pendulum length from the rod to the middle of the mass.Experiment 14 Pendulum Periods A swinging pendulum keeps a very regular beat. It is so regular, in fact, that for many years the pendulum was the heart of clocks used in astronomical measurements at the Greenwich Observatory. There are at least three things you could change about a pendulum that might affect the period (the time for one complete cycle): . the amplitude of the pendulum swing . the length of the pendulum, measured from the center of the pendulum bob to the point of support . the mass of the pendulum bob To investigate the pendulum, you need to do a controlled experiment; that is, you need to make measurements, changing only one variable at a time. Conducting controlled experiments is a basic principle of scientific investigation. In this experiment, you will use a Phet Lab to set up your pendulums and collect your data.. https://phet.colorado.edu/en/simulations/category/physics . The title is pendulum periods. Figure 1 OBJECTIVES . Measure the period of a pendulum as a function of amplitude. . Measure the period of a pendulum as a function of length. . Measure the period of a pendulum as a function of bob mass. MATERIALS Phet Lab Note: We will be using the Phet Lab to make our Pendulums. Ignore any references to the Photogates and the Vernier Softwar. 14 - 1 Physics with ComputersPendulum Periods Part III Mass 8. Use the three masses to determine if the period is affected by changing the mass. Measure the period of the pendulum constructed with each mass, taking care to keep the distance from the ring stand rod to the center of the mass the same each time, as well as keeping the amplitude the same. Repeat Step 5 for each mass, using an amplitude of about 20. Record the data in your data table DATA TABLE Part I Amplitude Amplitude Average period (0 ) (s ) Part II Length Length Average period (cm) (s) Part III Mass Mass Average period (g) (S) 100 200 300 ANALYSISExperiment 14 1. Using either Graphical Analysis or graph paper, plot a graph of pendulum period vs. amplitude in degrees. Scale each axis from the origin (0,0). Does the period depend on amplitude? Explain. 2. Using either Graphical Analysis or graph paper, plot a graph of pendulum period T vs. length L. Scale each axis from the origin (0,0). Does the period appear to depend on length? 3. Using either Graphical Analysis or graph paper, plot the pendulum period vs. mass. Scale each axis from the origin (0,0). Does the period appear to depend on mass? Do you have enough data to answer conclusively? Using Newton's laws, we could show that for some pendulums, the period T is related to the length & and free-fall acceleration g by T = 2n , or 12 = 47 Does one of your graphs support this relationship? Explain. (Hint: Can the term in parentheses be treated as a constant of proportionality?) 14 - 4 Physics with Computers