A uniform chain of length $2\mathrm{m}$ is kept on a table such that a length of $60\mathrm{cm}$ hangs freely from the edge of the table. The total mass of the chain is $4\mathrm{kg}$. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table  $\left(\mathrm{g}=10\mathrm{m}/{\mathrm{s}}^2\right)$.