A. write down the coupled differential equations for 2 springs for 3 masses, i.e. the two...
A. write down the coupled differential equations for 2 springs for 3 masses, i.e. the two outermost masses are only attached to the one in the middle (no walls).
B Write down the system matrix equivalent to eq. 2.29 in the textbook. Make sure to identify; A, x, B, and f .
C. Calculate eigenvalues, and eigenvectors.
D. Find the normal mode (eigenmode) frequencies.
E. Write down the full solution as a linear combination of eigenmodes
Homework Answers
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A. write down the coupled differential equations for 2 springs
for 3 masses, i.e. the two...
Consider the system of two coupled differential equations: y-cx + dy, x-ax + by, with the equilibrium solution (xe,ye) = (0,0) (a) Rewrite the coupled system as a matrix differential equation and ide...
Consider the system of two coupled differential equations: y-cx + dy, x-ax + by, with the equilibrium solution (xe,ye) = (0,0) (a) Rewrite the coupled system as a matrix differential equation and identify the matrix A. Obtain a general solution to the matrix differential equation in terms of eigenvectors and eigenvalues of A. Justify your answer (b) Classify possible types and stability of the equilibrium with dependence on the eigenvalues of A. (Note: You are not asked to compute the...
Problem #8: A system of differential equations can be created for two masses connected by springs...
Problem #8: A system of differential equations can be created for two masses connected by springs between one another, and connected to opposing walls. The dependent variables form a 4x1 vector y consisting of the displacement and velocity of each of the two masses. For the system y' = Ay, the matrix A is given by: To 0 -5 3 0 0 3 -5 1 0 -4 0 0 1 0 -4 Because the system oscillates, there will be complex...
Homework 7: Undamped, 2-DOF System 1. A system with two masses of which the origins are...
Homework 7: Undamped, 2-DOF System 1. A system with two masses of which the origins are at the SEPs is shown in Figure 1. The mass of m2 is acted by the external force of f(t). Assume that the cable between the two springs, k2 and k3 is not stretchable. Solve the following problems (a) Draw free-body diagrams for the two masses and derive their EOMs (b) Represent the EOMs in a matrix fornm (c) Find the undamped, natural frequencies...
Consider the system of two equal masses M joined together by three identical springs of spring co...
Consider the system of two equal masses M joined together by three identical springs of spring constant k. *2 x1 As shown in the figure, assume the left mass has been displaced a from its equilibrium position, and the right mass has been displaced distance a distance T2 from its equilibrium position. In terms of ri and z2 i. How much has the left spring been stretched/compressed from equilibrium? ii. How much has the middle spring been stretched/compressed from equilib-...
This time, you are asked to analyze the time dependent behavior of two masses (m, and...
This time, you are asked to analyze the time dependent behavior of two masses (m, and m.) connected by a massless spring. You may assume that the spring is linear, has a spring constant k and a free length of L. That is if the spring is stretched to length L' > Lit exerts a compressive force of magnitude (L' L). However, if compressed, ie., L' <Lit exerts an expansion force of magnitude (L-1). In Newtonian Mechanics, motion of the...
4. Problem 4. Consider the following system of first order coupled ordinary differential equation...
4. Problem 4. Consider the following system of first order coupled ordinary differential equations, where r (t) and a) Rewrite the initial value problem (IVP) in a matrix form aAi, where ? r (0) +v()() b) Find the three distinct (real) eįgrivalus {A] c) Verify that, satisfies the IVP where the constant ακ fficients c1 c2 and C3 can be detennined from the three given initial conditions. P BIVPn initial 5. Problem 5 (challenge problem): Sinultaneous diagonalization of commuting matrices...
3. (40 pts total) Eigenvalues of Systems of Equations Application: Series RLC Circuit, Natural, or Transient...
3. (40 pts total) Eigenvalues of Systems of Equations Application: Series RLC Circuit, Natural, or Transient Response (Remember EE280, maybe not) M SR v(t) Consider a series RLC circuit, with a resistor R, inductor L, and capacitor C in series. The same current i(t) flows through R, L, and C. The switch S1 is initially closed and S2 is initially open allowing the circuit to fully charge. At t=0 the switch S1 opens and S2 closes as shown above. Solving...
Discretization, ODE solving, condition number. Consider the differential equation 5y"(x) - 2y'(x) +10y(x)0 on the interval x E [0,10] with boundary conditions y(0)2 and y (10) 3 we set up a f...
Discretization, ODE solving, condition number. Consider the differential equation 5y"(x) - 2y'(x) +10y(x)0 on the interval x E [0,10] with boundary conditions y(0)2 and y (10) 3 we set up a finite difference scheme as follows. Divide [0,10] into N-10 sub-intervals, i.e. {xo, X1, [0,1,. 10. Denote xi Xo + ih (here, h- 1) and yi E y(x). Approximate the derivatives as follows X10- 2h we have the following equations representing the ODE at each point Xi ,i = 1,...
I only need number 4 Figure 2 3. Consider the network in Figure 2. Write down a system of equations which could be u...
I only need number 4
Figure 2 3. Consider the network in Figure 2. Write down a system of equations which could be used to find the loop currents in this network. Check that the augmented matrix for this system is equivalent to matrix A which is given below, and which accompanies this exercise set. 17 -8 0 0 -6 0 0 0 0 00 0 0 0 1 -8 14 0 0 0-2 0 0 0 0 0 0...
could you please solve a and b? Chapier 2i. Note: you needn't derive Kepler's laws-but do...
could you please solve a and b?
Chapier 2i. Note: you needn't derive Kepler's laws-but do mention when you are using them, an describe the physical concepts involved and the meanings behind the variables. u) Consider two stars Mi and M; bound together by their mutual gravitational force (and isolated from other forces) moving in elliptical orbits (of eccentricity e and semi-major axes ai and az) at distances 11 in n and r from their center of mass located at...
Consider the system of two coupled differential equations: y-cx + dy, x-ax + by, with the equilibrium solution (xe,ye) = (0,0) (a) Rewrite the coupled system as a matrix differential equation and identify the matrix A. Obtain a general solution to the matrix differential equation in terms of eigenvectors and eigenvalues of A. Justify your answer (b) Classify possible types and stability of the equilibrium with dependence on the eigenvalues of A. (Note: You are not asked to compute the...
Problem #8: A system of differential equations can be created for two masses connected by springs between one another, and connected to opposing walls. The dependent variables form a 4x1 vector y consisting of the displacement and velocity of each of the two masses. For the system y' = Ay, the matrix A is given by: To 0 -5 3 0 0 3 -5 1 0 -4 0 0 1 0 -4 Because the system oscillates, there will be complex...
Homework 7: Undamped, 2-DOF System 1. A system with two masses of which the origins are at the SEPs is shown in Figure 1. The mass of m2 is acted by the external force of f(t). Assume that the cable between the two springs, k2 and k3 is not stretchable. Solve the following problems (a) Draw free-body diagrams for the two masses and derive their EOMs (b) Represent the EOMs in a matrix fornm (c) Find the undamped, natural frequencies...
Consider the system of two equal masses M joined together by three identical springs of spring constant k. *2 x1 As shown in the figure, assume the left mass has been displaced a from its equilibrium position, and the right mass has been displaced distance a distance T2 from its equilibrium position. In terms of ri and z2 i. How much has the left spring been stretched/compressed from equilibrium? ii. How much has the middle spring been stretched/compressed from equilib-...
This time, you are asked to analyze the time dependent behavior of two masses (m, and m.) connected by a massless spring. You may assume that the spring is linear, has a spring constant k and a free length of L. That is if the spring is stretched to length L' > Lit exerts a compressive force of magnitude (L' L). However, if compressed, ie., L' <Lit exerts an expansion force of magnitude (L-1). In Newtonian Mechanics, motion of the...
4. Problem 4. Consider the following system of first order coupled ordinary differential equations, where r (t) and a) Rewrite the initial value problem (IVP) in a matrix form aAi, where ? r (0) +v()() b) Find the three distinct (real) eįgrivalus {A] c) Verify that, satisfies the IVP where the constant ακ fficients c1 c2 and C3 can be detennined from the three given initial conditions. P BIVPn initial 5. Problem 5 (challenge problem): Sinultaneous diagonalization of commuting matrices...
3. (40 pts total) Eigenvalues of Systems of Equations Application: Series RLC Circuit, Natural, or Transient Response (Remember EE280, maybe not) M SR v(t) Consider a series RLC circuit, with a resistor R, inductor L, and capacitor C in series. The same current i(t) flows through R, L, and C. The switch S1 is initially closed and S2 is initially open allowing the circuit to fully charge. At t=0 the switch S1 opens and S2 closes as shown above. Solving...
Discretization, ODE solving, condition number. Consider the differential equation 5y"(x) - 2y'(x) +10y(x)0 on the interval x E [0,10] with boundary conditions y(0)2 and y (10) 3 we set up a finite difference scheme as follows. Divide [0,10] into N-10 sub-intervals, i.e. {xo, X1, [0,1,. 10. Denote xi Xo + ih (here, h- 1) and yi E y(x). Approximate the derivatives as follows X10- 2h we have the following equations representing the ODE at each point Xi ,i = 1,...
I only need number 4
Figure 2 3. Consider the network in Figure 2. Write down a system of equations which could be used to find the loop currents in this network. Check that the augmented matrix for this system is equivalent to matrix A which is given below, and which accompanies this exercise set. 17 -8 0 0 -6 0 0 0 0 00 0 0 0 1 -8 14 0 0 0-2 0 0 0 0 0 0...
could you please solve a and b?
Chapier 2i. Note: you needn't derive Kepler's laws-but do mention when you are using them, an describe the physical concepts involved and the meanings behind the variables. u) Consider two stars Mi and M; bound together by their mutual gravitational force (and isolated from other forces) moving in elliptical orbits (of eccentricity e and semi-major axes ai and az) at distances 11 in n and r from their center of mass located at...
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