Homework Answers
Apply Laplace transform with given initial conditions to get
x(s)...use partial fractions to simplify x(s).. apply inverse
Laplace transform to get x(t) as shown below
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The following differential equation is the equation of motion for an ideal spring-mass system with damping and an external force F(t) m. x C. x If m1 = 1kg, c = 5N.s/m, k = 4 N/m F(t) = 2N And x'...
Q5 The equation of the motion of the mechanical system shown in the following figure is...
Q5 The equation of the motion of the mechanical system shown in the following figure is governed by the following differential equation d2 x dx m7+9+= -f(t) - 3kx dt2 dt where m, C and k are mass, damping coefficient and spring constant, respectively. Consider the system with m = 10 kg, c = 80 Ns/m, k = 50 N/m, and the system is at rest at time t = 0 s. f(t) is the external force acting on the...
QUESTION 2: Consider this forced translational mass-spring-damper (MSD) system: The input is the external force "F(t)"...
QUESTION 2: Consider this forced translational mass-spring-damper (MSD) system: The input is the external force "F(t)" and the output is position "x(t)." The transfer function for this system is g) - 6 - Mz? +BS+K It is known that M - 1 kg. B - 10 mm, and there are three possible values of K: (K = 16 K = 34 NK-89 The only possible external forces "F(t)" have the following Laplace transforms: 1) F,(s) - 0 (corresponding to external...
A mass m = 1kg attached to a spring of rigidity k = 16 is set...
A mass m = 1kg attached to a spring of rigidity k = 16 is set in motion using a force F (t) = 3 sin (4t). Assuming that there is no damping and zero initial conditions: a) Find the corresponding complementary solution yc (t). b) Find the corresponding particular solution yp (t). c) Find the corresponding general solution y (t) taking into account the initial conditions. d) In this problem, is the motion of the mass stable or unstable?...
1. A 1 kg mass is attached to a spring of spring constant k = 4kg/82, The spring-mass system is a...
Differntial Equations Forced Spring Motion
1. A 1 kg mass is attached to a spring of spring constant k = 4kg/82, The spring-mass system is attached to a machine that supplies an external driving force of f(t) = 4 cos(wt). The systern is started from equilibrium i.e. 2(0) = 0 and z'(0) = 0. There is no damping. (a) Find the position x(t) of the mass as a function of time (b) write your answer in the form r(t)-1 sin(6t)...
Consider the spring-mass-damper system shown. Assume M-1kg. B - 20 N-s/m, K-25 N/m and f(t) =...
Consider the spring-mass-damper system shown. Assume M-1kg. B - 20 N-s/m, K-25 N/m and f(t) = ON (zero-input case). The initial conditions are: x(O) = 1 m, x(0) = 0 m/s Select the correct plot of "x vs. t" for this zero-input case. They M B 0 0 O O o
1.- Starting from the differential equation for a 1-degree of freedom system with mass M, damping...
1.- Starting from the differential equation for a 1-degree of freedom system with mass M, damping c and spring stiffness k: a.- Show that the particular solution for the equation with an applied force fo cos(ot), i.e., Mä+ci+kx=f, cos(or) can be expressed as x )= A cos(ot) + A, sin(or) and find the values of A, and A, that solve the differential equation in terms of M, c, k and fo. 5 points. b. Use the result from part a...
Suppose that the mass in a mass-spring-dashpot system with mass m = 81, damping constant C=...
Suppose that the mass in a mass-spring-dashpot system with mass m = 81, damping constant C= 108, and spring constant k = 232 is set in motion with c(0) = 23 and z'(0) = 38. (a) Find the position function X(t) in the form x(t) = cos (b) Find the psuedoperiod of the oscillations and the equations of the "envelope curves" shown in the figure below, which graphs the motion of the mass in the system described above. Psuedoperiod of...
The motion of a mass-spring system with damping is governed by y''(t) + 8y' (t) +...
The motion of a mass-spring system with damping is governed by y''(t) + 8y' (t) + ky(t) = 0; y(0) = 4, and y'(0) = 0. Find the equation of motion and sketch its graph for k= 13, 16, and 19. What is the equation of motion for k= 13? y(t) = 1 (Type an exact answer, using radicals as needed.)
F Fosin t m k 2 Figure Qla: System is subjected to a periodic force excitation (a) Derive the equation of motion of the...
F Fosin t m k 2 Figure Qla: System is subjected to a periodic force excitation (a) Derive the equation of motion of the system (state the concepts you use) (b) Write the characteristic equation of the system [4 marks 12 marks (c) What is the category of differential equations does the characteristic equation [2 marks fall into? (d) Prove that the steady state amplitude of vibration of the system is Xk Fo 25 + 0 marks (e) Prove that...
A spring has a Damping resistance of c = 100, a mass of m = .1kg...
A spring has a Damping resistance of c = 100, a mass of m = .1kg and a spring constant value of k = 10 kg/ms2 . a) is this system under , over or critically damped? b) If underdamped, calculate the oscillation frequency of the spring.
Q5 The equation of the motion of the mechanical system shown in the following figure is governed by the following differential equation d2 x dx m7+9+= -f(t) - 3kx dt2 dt where m, C and k are mass, damping coefficient and spring constant, respectively. Consider the system with m = 10 kg, c = 80 Ns/m, k = 50 N/m, and the system is at rest at time t = 0 s. f(t) is the external force acting on the...
QUESTION 2: Consider this forced translational mass-spring-damper (MSD) system: The input is the external force "F(t)" and the output is position "x(t)." The transfer function for this system is g) - 6 - Mz? +BS+K It is known that M - 1 kg. B - 10 mm, and there are three possible values of K: (K = 16 K = 34 NK-89 The only possible external forces "F(t)" have the following Laplace transforms: 1) F,(s) - 0 (corresponding to external...
Differntial Equations Forced Spring Motion
1. A 1 kg mass is attached to a spring of spring constant k = 4kg/82, The spring-mass system is attached to a machine that supplies an external driving force of f(t) = 4 cos(wt). The systern is started from equilibrium i.e. 2(0) = 0 and z'(0) = 0. There is no damping. (a) Find the position x(t) of the mass as a function of time (b) write your answer in the form r(t)-1 sin(6t)...
Consider the spring-mass-damper system shown. Assume M-1kg. B - 20 N-s/m, K-25 N/m and f(t) = ON (zero-input case). The initial conditions are: x(O) = 1 m, x(0) = 0 m/s Select the correct plot of "x vs. t" for this zero-input case. They M B 0 0 O O o
1.- Starting from the differential equation for a 1-degree of freedom system with mass M, damping c and spring stiffness k: a.- Show that the particular solution for the equation with an applied force fo cos(ot), i.e., Mä+ci+kx=f, cos(or) can be expressed as x )= A cos(ot) + A, sin(or) and find the values of A, and A, that solve the differential equation in terms of M, c, k and fo. 5 points. b. Use the result from part a...
Suppose that the mass in a mass-spring-dashpot system with mass m = 81, damping constant C= 108, and spring constant k = 232 is set in motion with c(0) = 23 and z'(0) = 38. (a) Find the position function X(t) in the form x(t) = cos (b) Find the psuedoperiod of the oscillations and the equations of the "envelope curves" shown in the figure below, which graphs the motion of the mass in the system described above. Psuedoperiod of...
The motion of a mass-spring system with damping is governed by y''(t) + 8y' (t) + ky(t) = 0; y(0) = 4, and y'(0) = 0. Find the equation of motion and sketch its graph for k= 13, 16, and 19. What is the equation of motion for k= 13? y(t) = 1 (Type an exact answer, using radicals as needed.)
F Fosin t m k 2 Figure Qla: System is subjected to a periodic force excitation (a) Derive the equation of motion of the system (state the concepts you use) (b) Write the characteristic equation of the system [4 marks 12 marks (c) What is the category of differential equations does the characteristic equation [2 marks fall into? (d) Prove that the steady state amplitude of vibration of the system is Xk Fo 25 + 0 marks (e) Prove that...
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