Final answer:
Two examples of harmonic motion are the motion of a simple pendulum with minimal damping and the motion of a mass attached to a spring with noticeable damping. The two motions differ in terms of the presence and extent of damping, but share similarities in their periodic pattern of oscillation.
Step-by-step explanation:
Harmonic motion refers to the motion of an object that oscillates back and forth around an equilibrium position. One example of harmonic motion with very little damping is the motion of a simple pendulum. When a pendulum swings back and forth, it experiences minimal damping due to air resistance. Another example of harmonic motion with noticeable damping is the motion of a mass attached to a spring. When the mass is set in motion and released, it gradually comes to rest due to the damping effect of friction.
The two motions differ in terms of the presence of damping. In the case of the pendulum, the damping is minimal, resulting in a smooth back and forth motion that continues for a long time. On the other hand, the mass-spring system experiences noticeable damping, causing the motion to gradually slow down and eventually come to a stop.
However, both motions exhibit similar characteristics. They both involve the oscillation of an object around an equilibrium position, following a periodic pattern. The frequency and period of the oscillation remain constant in both cases, but the amplitude of the oscillation decreases over time due to damping.