The yacht is anchored with a chain that has a total length of 40 m and a mass per unit len...

The yacht is anchored with a chain that has a total length of 40 m and a mass per unit length of 18 kg/m, and the tension in the chain at A is 7 kN. Determine the length of chain ld which is lying at the bottom of the sea. What is the distance d? Assume that buoyancy effects of the water on the chain are negligible.