The wheels and axle system lying on a rough surface is shown in the figure.
Each wheel has diameter $\text{0.8 m}$ and mass $\text{1 kg}$. Assume that the mass of the wheel is concentrated at rim and neglect the mass of the spokes. The diameter of axle is $\text{0.2 m}$ and its mass is $\text{1.5 kg}$. Neglect the moment of inertia of the axle and assume $g=9.8\:m/s^{2}$. An effort of $\text{10 N}$ is applied on the axle in the horizontal direction shown at mid span of the axle. Assume that the wheels move on a horizontal surface without slip. The acceleration of the wheel axle system in horizontal direction is ______ $\text{m/s}^{2} (\textit{round off to one decimal place}$).