# Water sprinkler used for grass lawns begins to rotate as soon as the water is supplied. Explain the principle on which it works.

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As the water comes out from the nozzle of the sprinklers, the sprinkler starts rotating because it works on the basis of Newton's $3^{rd}$ law states that there is an equal reaction force in opposite direction for every action force.

Updated on 10-Oct-2022 13:28:47