16. Consider a trajectory along a piece of the IT astroid r(t) = (cos't,sin's), for 0515 2 where the components of r have units of meters and / has units of time (Figure 1). What is the speed along the path? Where along the path is the speed greatest? Least?

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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16. Consider a trajectory along a piece of the
astroid r(t) = (cos't, sin³t), for 05152
where the components of r have units of meters
and has units of time (Figure 1). What is the
speed along the path? Where along the path is
the speed greatest? Least?
17. Suppose you want to design a trajectory along
the segment of the astroid in Step 16 with a
constant speed of Vo. Carry out the procedure
outlined above by assuming the trajectory has
the form r(t) = (cos' u(t), sin' u(t)), for
OSIST. Show that the required function u
may be expressed in either of the following two
equivalent forms:
11-2061
3
8.5
u(t)= cos ¹.
-0.5
sin-2Vot
3
18. What value of T should be used so the trajectory in Step 17 starts at (1, 0) and ends at (0, 1)?
8.5
Figure 1
Transcribed Image Text:16. Consider a trajectory along a piece of the astroid r(t) = (cos't, sin³t), for 05152 where the components of r have units of meters and has units of time (Figure 1). What is the speed along the path? Where along the path is the speed greatest? Least? 17. Suppose you want to design a trajectory along the segment of the astroid in Step 16 with a constant speed of Vo. Carry out the procedure outlined above by assuming the trajectory has the form r(t) = (cos' u(t), sin' u(t)), for OSIST. Show that the required function u may be expressed in either of the following two equivalent forms: 11-2061 3 8.5 u(t)= cos ¹. -0.5 sin-2Vot 3 18. What value of T should be used so the trajectory in Step 17 starts at (1, 0) and ends at (0, 1)? 8.5 Figure 1
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