What is the relationship between mass, velocity and kinetic energy?
In the Pendulum lab, you observed the shorter the string, the more swings the pendulum made in 10 seconds. Explain why you think this occured.
Why doesn't the pendulum return to it's orginal starting height?
Draw a model of the pendulum in motion. Label it with the following: 100% PE, 50% PE, 20% PE 100% KE; 50% KE, 80% KE *Hint- there should be 7 labels total
String length: 30 cm Time: 18 swings in 10 seconds Mass: 4.6 g Calculate the KE
String length: 30 cm Time: 15 swings in 10 seconds Mass: 16g Calculate the KE
String length: 10 cm Time: 26 swings in 10 seconds Mass: 16g Calculate the KE
What has more impact on overall KE: mass or velocity? How do you know?
What conclusions can you draw about the effect of BOTH mass and velocity on the amount of KE contained in a system?
Materials: ramp, books to adjust height, marbles of various masses, timer, cup.
What indepedent variable could we test?
What is the dependent variable?
What is the purpose of the cup at the end of the ramp?
Based on what you learned from the pendulum lab, what prediction can you make about the following investigation: independent variable: marble mass; dependent variable ramp height (same force)?
In this investigation, how could you increase velocity?