4. A force sensor has a mass of 0.5 kg, stiffness of 200 N/m and a damping constant of 6.0 N s m'. a. Calculate the steady-state sensitivity, natural frequency and damping ratio for the sensor. b. Calculate the displacement of the sensor for a steady input force of 2 N. c. If the input force is suddenly increased from 2 N to 3 N, derive an expression for the resulting displacement of the sensor. Assume that the sudden change is being modeled using step-function. d. Estimate the values of maximum overshoot (in %) and settling time (in 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.
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