1. Consider a point particle with position vector r = (x, y, z) in Cartesian coordinates, moving with a velocity v = (B, az, -ay), where a and ẞ are positive constants. (a) What are the physical dimensions of a and ẞ? (b) Find the general form of r(t), the position of the particle, as a function of time t, assuming the initial position of the particle is ro= (0, 2, 0) (hint: write v = (B, az, -ay) as a system of first order ODEs and note that the equation for x is decoupled from the others). Describe in words the motion of the particle and sketch its trajectory in R³ (you can use software packages for the plot). (c) Show that the speed of the particle is constant, but the acceleration vector a(t) is nonzero. Justify. (d) Assuming the particle has a constant mass m, use Newton's second law to show that the force acting on the particle is (as a function of the position r = (x, y, z)) F(x, y, z) = ma²(0, −y, −z).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.3: Lines
Problem 22E
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Just question d),please 

1. Consider a point particle with position vector r = (x, y, z) in Cartesian coordinates, moving
with a velocity v = (ẞ, az, -ay), where a and ẞ are positive constants.
(a) What are the physical dimensions of a and ẞ?
(b) Find the general form of r(t), the position of the particle, as a function of time t, assuming
the initial position of the particle is ro (0,2,0) (hint: write v = (ẞ, az, -ay) as a system
==
of first order ODEs and note that the equation for x is decoupled from the others).
Describe in words the motion of the particle and sketch its trajectory in R³ (you can use
software packages for the plot).
(c) Show that the speed of the particle is constant, but the acceleration vector a(t) is nonzero.
Justify.
(d) Assuming the particle has a constant mass m, use Newton's second law to show that the
force acting on the particle is (as a function of the position r = (x, y, z))
F(x, y, z) = ma²(0, −y, −z).
Transcribed Image Text:1. Consider a point particle with position vector r = (x, y, z) in Cartesian coordinates, moving with a velocity v = (ẞ, az, -ay), where a and ẞ are positive constants. (a) What are the physical dimensions of a and ẞ? (b) Find the general form of r(t), the position of the particle, as a function of time t, assuming the initial position of the particle is ro (0,2,0) (hint: write v = (ẞ, az, -ay) as a system == of first order ODEs and note that the equation for x is decoupled from the others). Describe in words the motion of the particle and sketch its trajectory in R³ (you can use software packages for the plot). (c) Show that the speed of the particle is constant, but the acceleration vector a(t) is nonzero. Justify. (d) Assuming the particle has a constant mass m, use Newton's second law to show that the force acting on the particle is (as a function of the position r = (x, y, z)) F(x, y, z) = ma²(0, −y, −z).
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