A mass weighing 4 pounds stretches a spring 4 inches. (a) Formulate an initial-value problem that corresponds
Question:
A mass weighing 4 pounds stretches a spring 4 inches.
(a) Formulate an initial-value problem that corresponds to the motion of this un-damped mass-spring system if the mass is extended 7 foot from Its rest position and released (with no initial velocity).
(b) Using the result of Exercise, find the solution of this initial-value problem.
Referred Exercise
Consider the equation cry
d 2 y/dt 2 + (k/m) y = 0
for the motion of a simple harmonic oscillator
(a) Consider the function y(t) = cos βt. Under what conditions on β is y(t) a solution?
(b) What initial condition (t = 0) in the yv-plane corresponds to this solution?
(c) In terms of k and m, what is the period of this solution?
(d) Sketch the solution curve (in the yv-plane) associated to this solution.
[Hint. Consider the quantity y 2 + (v/β)2.]
A First Course in Differential Equations with Modeling Applications
ISBN: 978-1111827052
10th edition
Authors: Dennis G. Zill