20 A lawn sprinkler consists of a rotating runner with two nozzles. The nozzles are oriented at right angles to the runner. The diameter of the runner is 20 mm; the diameter of the sprinkler nozzles is 10 mm. Water is supplied by the attached hose (not shown) at a rate of 14 m³/h. What single force must be placed on one side of the runner at a distance of 100 mm from the center of rotation in order to stop the sprinkler from rotating?

20 A lawn sprinkler consists of a rotating runner with two nozzles. The nozzles are oriented at right angles to the runner. The diameter of the runner is 20 mm; the diameter of the sprinkler nozzles is 10 mm. Water is supplied by the attached hose (not shown) at a rate of 14 m³/h. What single force must be placed on one side of the runner at a distance of 100 mm from the center of rotation in order to stop the sprinkler from rotating?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Storm Sewers and Detention

The storm drains system transports rainwater or stormwater and other runoff from roads, parking lots, and roof downpipes directly to nearby creeks, rivers, or the sea without any treatment.

Question

20 A lawn sprinkler consists of a rotating runner with
two nozzles. The nozzles are oriented at right angles to
the runner. The diameter of the runner is 20 mm; the
diameter of the sprinkler nozzles is 10 mm. Water is
supplied by the attached hose (not shown) at a rate of
14 m³/h. What single force must be placed on one side
of the runner at a distance of 100 mm from the center
of rotation in order to stop the sprinkler from rotating?
300 mm
(A) 12 N
(B) 50 N
(C) 75 N
(D) 290 N
10 mm diameter nozzle
center of rotation
300 mm

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