The correct Solution is (4)
$
\begin{array}{l}
\mathrm{x}=45 \mathrm{~m} 2 \pi \mathrm{t} \\
\mathrm{y}=4 \cos (2 \pi \mathrm{t})
\end{array}
$
On Squaring and adding.
$\Rightarrow$ Circular motion
$
V=\omega=(2 \pi)(4)=8 \pi
$
The correct Solution is (4)
$
\begin{array}{l}
\mathrm{x}=45 \mathrm{~m} 2 \pi \mathrm{t} \\
\mathrm{y}=4 \cos (2 \pi \mathrm{t})
\end{array}
$
On Squaring and adding.
$\Rightarrow$ Circular motion
$
V=\omega=(2 \pi)(4)=8 \pi
$