A body of mass 2 kg is moving along x -direction such that its displacement as function of time is given by $\mathrm{x}(\mathrm{t})=\alpha \mathrm{t}^{2}+\beta \mathrm{t}+\gamma \mathrm{m}$, where $\alpha=1 \mathrm{~m} / \mathrm{s}^{2}$, $\beta=1 \mathrm{~m} / \mathrm{s}$ and $\gamma=1 \mathrm{~m}$. The work done on the body during the time interval $\mathrm{t}=2 \mathrm{~s}$ to $\mathrm{t}=3 \mathrm{~s}$, is\\ $\_\_\_\_$ J.