A tire weighing $2Kgs$ begins rolling down a steep hill (a $30^{\circ}$ incline) as shown. Determine the acceleration of the tire. Ignore resistance force.

Question

$\begin{array}{1 1}4.9 \;m/s^2 \\9.8\;m/s^2\\6.4 \;m/s^2\\11.2\;m/s^2\end{array}$