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Physics
Physics
Problem
A particle’s position is given by
r
(
t
)
=
⟨
cos
(
k
t
)
,
sin
(
k
t
)
,
t
⟩
\mathbf r(t)=\langle\cos(kt),\,\sin(kt),\,t\rangle
r
(
t
)
=
⟨
cos
(
k
t
)
,
sin
(
k
t
)
,
t
⟩
, where
k
k
k
is a non-zero constant. Determine all real values of
k
k
k
for which the particle travels with speed
5
5
5
.
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