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A fire hydrant delivers water of density  at a volume rate. The water travels vertically upwards through the hydrant and then does  turn to emerge horizontally at speed. The pipe and nozzle have uniform cross-section throughout. The force exerted by water on the corner of the hydrant is

a)

Zero

b)

c)

d)



Question ID - 57378 | SaraNextGen Top Answer

A fire hydrant delivers water of density  at a volume rate. The water travels vertically upwards through the hydrant and then does  turn to emerge horizontally at speed. The pipe and nozzle have uniform cross-section throughout. The force exerted by water on the corner of the hydrant is

a)

Zero

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

In time , momentum of water entering the hydrant

Momentum of water while leaving the hydrant in time  is

Change in momentum in time  is

Force exerted by water,

127 votes


127