Question: A non - conducting container filled with 2 5 0 kg of water at 2 0 C . It fitted with a stirrer which is

A non-conducting container filled with 250 kg of water at 20 C. It fitted with a stirrer which is made to turn by gravity, acting on a weight of mass 350 kg. The weight falls slowly through a distance of 30 m in driving the stirrer. Assuming that all work done on the weight is transferred to the water and that the local acceleration of gravity is 9.8 m per second square, determine the amount of done on the water.

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