dr a = dt² d²r d? + 2 dr dr d dt² u, + dt dt dt

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.4: Values Of The Trigonometric Functions
Problem 24E
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A communications satellite moves in a circular orbit around Earth at a distance of 42,000 kilometers from the center of Earth. The angular speed d/dt =     =   /12  radian per hour                                                                         is constant.                                                                                                        (a) Use polar coordinates to show that the acceleration vector is given by a (as attached) where ur = cos i + sin j is the unit vector in the radial direction and u = −sin i + cos j.                                                                                      (b) Find the radial and angular components of acceleration for the satellite.

dr
a =
dt²
d²r
d?
+ 2
dr
dr d
dt²
u, +
dt
dt dt
Transcribed Image Text:dr a = dt² d²r d? + 2 dr dr d dt² u, + dt dt dt
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