What is the force a fire hose puts off on the firefighter holding it for a...

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Question

What is the force a fire hose puts off on the firefighter holding it for a 1.75inch hose pumping 170gpm at 125 psi?

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what is velocity of the water coming from hose? (in m/s)

what is the flow rate?

science physics

Answer 1

Answer #1

a] Force = pressure*area

= 125 lb/in^2*(pi*1.75^2/4) in^2

= 300.66 lb

b] velocity = flow rate/area = 170 gallons per minute/(pi*d^2/4)

= [170*3.785 litres /(60 s) ]/(pi*(1.75*0.0254m)^2/4)

= [170*3.785*10^-3 m^3 /(60 s) ]/(pi*(1.75*0.0254m)^2/4)

= 6.91 m/s

c] flow rate = 170 gallons per minute = [170*3.785 litres /(60 s) ]

= [170*3.785*10^-3 m^3 /(60 s) ]

= 0.0107 m^3/s

Answer 2

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