4) Consider the following mass spring damper system: k m2 u(t) Assuming that y, > y1, equation of motion (EOM) for this system can be obtained by applying the Newton's second law: F, = mỹ (i. e. RHS is positive) Then, equations are written as: m,ỹi = k2(V2 – Y1) – k,yı – cy, (1) m2y2 = u(t) - k2(y2 – Yı) (2) where u(t) is the input function to the system. Take m, = 1 kg, m2 = 2 kg, c = 10 Ns/m and ki = 10 N/m, k2 = 20 N/m. Then, answer the following questions. a) Find the transfer functions G,(s) = 1O and G2(s) = 4O U(s) U(s) b) Use Laplace transform method and obtain the displacements in Laplace space (i.e. s domain) Y,(s) and Y2(s) utilizing initial conditions y, (0) = 0, y2(0) = 1, ÿ; (0) = 1 and y2(0) = 0. Use Cramer's rule for the solutions of Y,(s) and Y2(s). c) Using Inverse Laplace transformation, obtain displacements in time space (i.e. time domain) Y1(t) and y2(t) if,

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Inverse Laplace

4) Consider the following mass spring damper system:
k
m2
u(t)
Assuming that y, > y1, equation of motion (EOM) for this system can be obtained by applying
the Newton's second law:
F, = mỹ (i. e. RHS is positive)
Then, equations are written as:
m,ỹi = k2(V2 – Y1) – k,yı – cy, (1)
m2y2 = u(t)
- k2(y2 – Yı) (2)
where u(t) is the input function to the system. Take m, = 1 kg, m2 = 2 kg, c = 10 Ns/m and
ki = 10 N/m, k2 = 20 N/m. Then, answer the following questions.
a) Find the transfer functions G,(s) = 1O and G2(s) = 4O
U(s)
U(s)
b) Use Laplace transform method and obtain the displacements in Laplace space (i.e. s domain)
Y,(s) and Y2(s) utilizing initial conditions y, (0) = 0, y2(0) = 1, ÿ; (0) = 1 and y2(0) = 0.
Use Cramer's rule for the solutions of Y,(s) and Y2(s).
c) Using Inverse Laplace transformation, obtain displacements in time space (i.e. time domain)
Y1(t) and y2(t) if,
Transcribed Image Text:4) Consider the following mass spring damper system: k m2 u(t) Assuming that y, > y1, equation of motion (EOM) for this system can be obtained by applying the Newton's second law: F, = mỹ (i. e. RHS is positive) Then, equations are written as: m,ỹi = k2(V2 – Y1) – k,yı – cy, (1) m2y2 = u(t) - k2(y2 – Yı) (2) where u(t) is the input function to the system. Take m, = 1 kg, m2 = 2 kg, c = 10 Ns/m and ki = 10 N/m, k2 = 20 N/m. Then, answer the following questions. a) Find the transfer functions G,(s) = 1O and G2(s) = 4O U(s) U(s) b) Use Laplace transform method and obtain the displacements in Laplace space (i.e. s domain) Y,(s) and Y2(s) utilizing initial conditions y, (0) = 0, y2(0) = 1, ÿ; (0) = 1 and y2(0) = 0. Use Cramer's rule for the solutions of Y,(s) and Y2(s). c) Using Inverse Laplace transformation, obtain displacements in time space (i.e. time domain) Y1(t) and y2(t) if,
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