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Vibration Analysis of Spring-Mass System with MEMS Accelerometers

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Vibration Analysis of Spring-Mass System with MEMS Accelerometers

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Questions and Answers

How can the stiffness of the spring be determined in the experiment?

By using a different type of sensor chip for data acquisition

By connecting one end to a rigid support and attaching known masses to the other end (correct)

By measuring the frequency of oscillations

By changing the orientation of the accelerometer

What is used for data acquisition in this experiment?

Laser pointer

Raspberry Pi

Arduino (correct)

Microphone

How is the natural frequency of the single DOF system determined?

By manually noting the time taken for 10 to 20 oscillations (correct)

By measuring the elongation of the ziplock bag

By using a different type of accelerometer

By analyzing the smartphone's specifications

What is done to confirm that the spring is still in its linearly elastic region?

Measuring the steady-state elongation in the spring Signup and view all the answers

What is used to analyze the vibrations of the spring-mass system in this experiment?

MEMS based accelerometers Signup and view all the answers

What is the purpose of attaching the Arduino board in close proximity to the setup?

To prevent the connecting wires from being pulled during oscillations Signup and view all the answers

Why should small perturbations be applied to the smartphone during the experiment?

To avoid damaging the smartphone Signup and view all the answers

What is one of the precautions mentioned to avoid while working with the Arduino board?

Avoid direct contact of Arduino board pins with the metallic frame Signup and view all the answers

How is logarithmic decrement (𝛿) defined in terms of amplitudes of cycles?

$\delta = \frac{x_1}{x_m+1}$ Signup and view all the answers

How is the damping coefficient (c) defined in terms of damping ratio (𝜁)?

$c = \frac{2\zeta}{\sqrt{km}}$ Signup and view all the answers