Question 5: Consider the mechanical system shown on the next page. Note that this figure contains geometric information. A uniform, homogeneous, slender rod with length L [m] and mass m [kg] can rotate about fixed point O. Its orientation is given by angle (t) [rad], which is defined positive in counterclockwise direction. An external force F(t) [N] acts on the end of the slender rod under a fixed angle of Ø [rad] with the horizontal. The slender rod is connected to a spring with stiffness k [N/m] and unstretched length lo [m] and a damper with damping constant d [Ns/m]. Note that the force exerted by the spring and damper is always directed horizontally. The gravitational acceleration g [m/s2] acts in negative vertical direction. Derive the equation of motion by using a) Newton's second law b) Lagrange's method c) Compare your results (is your answer correct?) d) Determine the equilibrium point when F(t) is zero e) Calculate the mass, stiffness and damping matrix. You don't have to fill in the equilibrium point(s)

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.8P
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Solving dynamics problems in steps:
1. Collect data and assumptions
2. Desired result?
3. Make drawing/sketch of the (sub)problem
4. Equations and calculations
5. Answer and conclusions
Furthermore:
- Write down the steps clearly
Check intermediate results (accuracy)
Dimension check and units!
Magnitude of number in line with expectation?
Transcribed Image Text:Solving dynamics problems in steps: 1. Collect data and assumptions 2. Desired result? 3. Make drawing/sketch of the (sub)problem 4. Equations and calculations 5. Answer and conclusions Furthermore: - Write down the steps clearly Check intermediate results (accuracy) Dimension check and units! Magnitude of number in line with expectation?
F(t)
L/4
L/4
L/4
k,lo
WW
Derive the equation of motion by using
a) Newton's second law
o
X a
b
g
Question 5: Consider the mechanical system shown on the next page. Note that this
figure contains geometric information. A uniform, homogeneous, slender rod with
length L [m] and mass m [kg] can rotate about fixed point O. Its orientation is given by
angle 8(t) [rad], which is defined positive in counterclockwise direction. An external
force F(t) [N] acts on the end of the slender rod under a fixed angle of Ø [rad] with the
horizontal. The slender rod is connected to a spring with stiffness k [N/m] and
unstretched length lo [m] and a damper with damping constant d [Ns/m]. Note that the
force exerted by the spring and damper is always directed horizontally. The gravitational
acceleration g [m/s2] acts in negative vertical direction.
b) Lagrange's method
c) Compare your results (is your answer correct?)
d) Determine the equilibrium point when F(t) is zero
e) Calculate the mass, stiffness and damping matrix. You don't have to fill in the
equilibrium point(s)
Transcribed Image Text:F(t) L/4 L/4 L/4 k,lo WW Derive the equation of motion by using a) Newton's second law o X a b g Question 5: Consider the mechanical system shown on the next page. Note that this figure contains geometric information. A uniform, homogeneous, slender rod with length L [m] and mass m [kg] can rotate about fixed point O. Its orientation is given by angle 8(t) [rad], which is defined positive in counterclockwise direction. An external force F(t) [N] acts on the end of the slender rod under a fixed angle of Ø [rad] with the horizontal. The slender rod is connected to a spring with stiffness k [N/m] and unstretched length lo [m] and a damper with damping constant d [Ns/m]. Note that the force exerted by the spring and damper is always directed horizontally. The gravitational acceleration g [m/s2] acts in negative vertical direction. b) Lagrange's method c) Compare your results (is your answer correct?) d) Determine the equilibrium point when F(t) is zero e) Calculate the mass, stiffness and damping matrix. You don't have to fill in the equilibrium point(s)
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