A firefighter clings to a vertical ladder and directs the end of a hose horizontally into a burning building. The water flow rate is 6.31 kg/s and the speed of the hose is 15 m/s. There is a vertical distance of 1.30 m between the hose and the end of the hose. Select the origin that will be inside the tubing between the shield legs. What torque should the firefighter apply to the hose? So what is the rate of change of the angular moment of water?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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A firefighter clings to a vertical ladder and directs the end of a hose horizontally into a burning building. The water flow rate is 6.31 kg/s and the speed of the hose is 15 m/s. There is a vertical distance of 1.30 m between the hose and the end of the hose. Select the origin that will be inside the tubing between the shield legs. What torque should the firefighter apply to the hose? So what is the rate of change of the angular moment of water? |
Given data:
The mass flow rate of water is .
The velocity of water is v=15 m/s.
The height from end of the hose is r=1.30 m.
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