period
Resources
PhET: Kepler's Laws
Interact with the variables to discover how planetary objects moves in elliptical orbits, and the other characteristics of these orbits described by the three Kepler’s Laws. Connect Astronomy with Math, by experimenting with ellipses, areas, and graphs.
PhET: Pendulum Lab
Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the swing. Observe the energy in the system in real-time, and vary the amount of friction. Measure the period using the stopwatch or period timer. Use the pendulum to find the value of g on Planet X. Notice the anharmonic behavior at large amplitude.
PhET: Masses and Springs
Hang masses from springs and adjust the spring constant and damping. Transport the lab to different planets, or slow down time. Observe the forces and energy in the system in real-time, and measure the period using the stopwatch.