Answer: Cycloidal Motion The figure shows the path of a particle modeled by the
Chapter 12, Problem 71(choose chapter or problem)
Cycloidal Motion The figure shows the path of a particle modeled by the vector-valued function
\(\mathbf{r}(t)=\langle\pi t-\sin \pi t, 1-\cos \pi t\rangle\)
The figure also shows the vectors v(t)/||v(t)|| and a(t)/||a(t)|| at the indicated values of t
(a) Find \(a_{\mathrm{T}} \text { and } a_{\mathrm{N}}\) at \(t=\frac{1}{2}, t=1, \text { and } t=\frac{3}{2}\)
(b) Determine whether the speed of the particle is increasing or decreasing at each of the indicated values of t. Give reasons for your answers.
Text Transcription:
r(t)= langle pi t-sin pi t, 1-cos pi t rangle
a_T
a_N
t=1/2
t=1
t=3/2
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