The total weight acting on the chain is the sum of the weight of the body and the weight of the chain itself.
1. Weight of the body: \( 200 \, \text{N} \)
2. Weight of the chain: \( 10 \times 10 = 100 \, \text{N} \)
Thus, the total weight is:
\[\text{Total weight} = 200 + 100 = 300 \, \text{N}\]
Since the chain-block system is in equilibrium, the tension \( T \) in the chain must balance the total weight:
\[T = 300 \, \text{N}\]