Considering a water supply canal extending over several kilometres, the bottom and sidewall friction retards the fluid, and, at equilibrium, the friction force counterbalances exactly the weight force component in the flow direction.
(a water supply canal; extending; over several kilometres) (the bottom and sidewall friction; retards; the fluid) (the friction force; counterbalances; exactly the weight force component in the flow direction; L:at equilibrium)
a water supply canal the bottom and sidewall friction the friction force
extending retards counterbalances
over several kilometres
the fluid
exactly the weight force component in the flow direction L:at equilibrium