Engineers can determine properties of a structure that is modeled as a damped spring oscillator, such as a bridge, by applying a driving force to it. A weakly damped spring oscillator of mass 0.277 kg is driven by a sinusoidal force at the oscillator's resonance frequency of 33.9 Hz. Find the value of the spring constant ?. k = ? N/m The amplitude of the driving force is 0.451 N and the amplitude of the oscillator's steady‑state motion in response to this driving force is 0.881 m. What is the oscillator's damping constant ?? b = ? kg/s
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.
Engineers can determine properties of a structure that is modeled as a damped spring oscillator, such as a bridge, by applying a driving force to it. A weakly damped spring oscillator of mass 0.277 kg is driven by a sinusoidal force at the oscillator's resonance frequency of 33.9 Hz. Find the value of the spring constant ?.
k = ? N/m
The amplitude of the driving force is 0.451 N and the amplitude of the oscillator's steady‑state motion in response to this driving force is 0.881 m. What is the oscillator's damping constant ??
b = ? kg/s
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