Mechanical oscillations and waves

6. Simple harmonic motion

This program illustrates a motion of a mass suspended on a spring. You can adjust spring constant k, mass m and the amplitude of the motion. Watch the changes of displacement, velocity, kinetic energy, potential energy, and total energy.

7. Damped oscillations

Watch simple pendulum motion as a function of pendulum length, motion amplitude, and damping constant. You can change option to critical damping or aperiodic motion.

8. Superposition of waves

This program displays a result of superposition of two transverse waves as a function of amplitude ratio and phase shift. Additionally you can watch standing waves and beats.

9. Doppler effect

The program shows Doppler effect for sound waves in the case when source and receiver move either directly toward or directly away from each other, 'at speeds less than the speed of sound. You can change speed of the source and receiver, their direction of motion as well as source frequency.