College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Equation of motion:
All of the below ordinary differential equations (ODES) describe motion subjected to different
forcing functions: In all cases, the velocity v is the dependent variable and time I is the
independent variable.
In all cases, for simplicity let m = 1 kg and F = 10 N unless otherwise noted.
For background reading, Chapter 2.1-2.6 covers objects in a gravitational field and solution
through separation of variables. Note that a gravitational field is at the same thing as a constant
forcing function. In this case F = mg. Chapter 3.2 and 3.3 gives the definition of a linear ODE
and the method of the integration factor for first order, linear ODES.
For each of these equations, answer the following questions:
1. Is the equation linear or nonlinear?
2. Is the equation homogenous (meaning the forcing function is equal to zero) or is it
non-homogenous (meaning the forcing function is not-zero).
1. m
3. Is the equation separable?
4. Can the ODE be solved by an integrating factor?
dv
= 0, v(0) = 12 m/s
dt
What is the velocity after 20 s?
dv
2. m = F, v(0) = 0 m/s
What is the velocity after 20 s?
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Transcribed Image Text:Equation of motion: All of the below ordinary differential equations (ODES) describe motion subjected to different forcing functions: In all cases, the velocity v is the dependent variable and time I is the independent variable. In all cases, for simplicity let m = 1 kg and F = 10 N unless otherwise noted. For background reading, Chapter 2.1-2.6 covers objects in a gravitational field and solution through separation of variables. Note that a gravitational field is at the same thing as a constant forcing function. In this case F = mg. Chapter 3.2 and 3.3 gives the definition of a linear ODE and the method of the integration factor for first order, linear ODES. For each of these equations, answer the following questions: 1. Is the equation linear or nonlinear? 2. Is the equation homogenous (meaning the forcing function is equal to zero) or is it non-homogenous (meaning the forcing function is not-zero). 1. m 3. Is the equation separable? 4. Can the ODE be solved by an integrating factor? dv = 0, v(0) = 12 m/s dt What is the velocity after 20 s? dv 2. m = F, v(0) = 0 m/s What is the velocity after 20 s?
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