Why it is only possible to produce the odd harmonics in a system with one open end and one closed end? Drawing pictures will help you answer this question. A node must exist at one end of the system, and an antinode at the other. Thus, when forming the second resonance, one must divide the wavelength by three in order for the next antinode to line up with the closed end of the system, while keeping a node at the open end of the system. This pattern continues as one increases the frequency, such that only odd fractions (1/3, 1/5, 1/7, etc.) of the wavelength can exist. A node must exist at one end of the system, and an antinode at the other. Thus, when forming the second resonance, one must divide the wavelength by three in order for the next antinode to line up with the open end of the system, while keeping a node at the closed end of the system. This pattern continues as one increases the frequency, such that only odd fractions (1/3, 1/5, 1/7, etc.) of the wavelength can exist. A node must exist at one end of the system, and an antinode at the other. Thus, when forming the second resonance, one must multiply the wavelength by three in order for the next antinode to line up with the open end of the system, while keeping a node at the closed end of the system. This pattern continues as one increases the frequency, such that only odd multiples (3, 5, 7, etc.) of the wavelength can exist. O A node must exist at one end of the system, and an antinode at the other. Thus, when forming the second resonance, one must multiply the wavelength by three in order for the next antinode to line up with the closed end of the system, while keeping a node at the open end of the system. This pattern continues as one increases the frequency, such that only odd multiples (3, 5, 7, etc.) of the wavelength can exist.
Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
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