I am trying to calculate the energy/ power required to move a plate up and down in a liquid.
My approach is to calculate the forces that must be applied by the motor to push/pull the plate based on Newton's law (as a function of the velocity, weight of the plate, properties of the fluid, and so on). Then to calculate Work as the product between force and displacement.
Can I say that the outcome is the required energy? Or is this a misleading assumption, based on the fact that both work and energy have the same measuring unit?