A water sprinkler contains two $1 / 4 mathrm{in}$. ID jets at the ends of a rotating

Question:

A water sprinkler contains two $1 / 4 \mathrm{in}$. ID jets at the ends of a rotating hollow ( $3 / 8 \mathrm{in}$. ID) tube, which direct the water $90^{\circ}$ to the axis of the tube. If the water leaves at $20 \mathrm{ft} / \mathrm{s}$, what torque would be necessary to hold the sprinkler in place?

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