Matter/Energy Pd.8A Swinging TimePurpose: To determine the factor(s) that affect the period of a pendulum.Hypothesis: The factors that I think will affect the period of the pendulum are the displacement and the suspended mass because if the mass of the bob is a lot than it will take more force for the pendulum to swing and if there’s a high displacement it will give the pendulum more energy to complete the cycle.Materials:stopwatch100, 200, and a 500g bob protractormeter stickstringProcedures:1. Gather materials.2. Start the string at a length of 130cm.(control)3. Attach a 200g bob(control) to the bottom of the string.4. Make the displacement 30cm by pulling the bob 30cm away from the center. Do this with a meter stick.5. Let go of the bob and allow one full cycle before starting the stop watch.6. Stop the stop watch after the bob returns.7. Record data.8. Repeat steps 1-7 with a displacement of 60cm. Then try a displacement of 90cm.9. Now repeat steps 1-7 with a length of suspension of 130cm,170cm, and 210cm. The controls are a bob of 200g and a displacement of 90cm.10. Finally repeat steps 1-7 with 100g, 200g, and a 500g bob. The controls are a displacement of 90cm and a suspension of 130cm.Observations: controls-length of suspension 130cm, bob 200gHow Displacement Affects the Period of a PendulumDisplacementPeriod30cm2.72 seconds60cm2.37 seconds90cm2.34 secondscontrols- displacement 90cm, bob 200g How Length of Suspension Affects the Period of a PendulumLength of SuspensionPeriod130cm2.34 seconds170cm2.55 seconds210cm2.87 secondscontrols- displacement 90cm, length of suspension 130cmHow the Bob Affects the Period of a PendulumBobsPeriod100g2.29 seconds200g2.34 seconds500g2.69 secondsConclusion:The purpose of this experiment was to determine the factor(s) that affect the period of a pendulum. The independent variables were the length of suspension, displacement, and mass (bob). The dependent variable was the period of the pen...
