From the definition of the concept of work in physics, it follows that mechanical work is determined by two parameters, namely: the force acting on the body and its movement. That is, A = Fs, where A is work, F is strength and s is the path traveled. Since in the vessel, in spite of the fact that the water presses on the walls with a certain force F, the liquid does not move at the same time, then work in this case is not performed either.
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