Using phet lab

PhET Pendulum Settings: Energy Friction set to None . Length set to 1 m Mass set to 1.5 kg Directions: Lift the pendulum to some angle and release to watch it go Observe the pendulum and the energy graph. Pay particular attention to the changes in kinetic and potential energy and the motion of the pendulum Observation Questions: 1. At which position(s) of the pendulum's swing is the kinetic energy maximum? 2. At which position(s) of the pendulum's swing is the potential energy maximum? 3. How is the pendulum moving when potential energy is decreasing? What is happening to its speed? 4. How is the pendulum moving when potential energy is increasing? What is happening to its speed? 5. At which position(s) is the speed maximum? At which position(s) is the speed minimum? 6. What happens to kinetic energy as potential energy increases? As potential energy decreases? 7. Does the total energy (kinetic + potential) ever change