Using phet lab

PhET Spring 300 g Settings: 300 Energy Gravity set to None . Damping set to None . Spring Constant set to Large . Mass set to 300 g Displacement/Natural Length checked Directions: The blue dashed line is the length of the spring with no stretching or compressing Lift the mass to hang it on the spring, pull the spring down to stretch it, and release to watch it go 300 g Observe the mass and spring and the energy graph. Pay particular attention to the changes in kinetic and elastic potential energy and the up and down motion of the spring Observation Questions: 1. At which position(s) of the spring is the kinetic energy maximum? 2. At which position(s) of the spring is the elastic potential energy maximum? 3. How is the spring moving when elastic potential energy is decreasing? What is happening to its speed? 4. How is the spring moving when elastic 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 elastic potential energy increases? As elastic potential energy decreases? 7. Does the total energy (kinetic + elastic potential) ever change