Nozzle to keep it from moving horizontally backwards

Assignment Help Mechanical Engineering

Reference no: EM13711486

A fireman is using a 10-cm inside-diameter fire hose is trying extinguish a fire. He is aiming the hose at 45Â° with respect to the horizontal and the water lands 30 m from the fire fighter. On the end of the fire hose is a nozzle. The inside diameter of the nozzle is 1.0 cm. What horizontal force must the fire fighter apply/exert to the hose/nozzle to keep it from moving horizontally backwards?

{Hint: Over a one second interval, calculate the mass (and acceleration) of the water and from F=Ma, determine the x/horizontal component. Calculate the nozzle velocity by noting that the water travels 30 m.}

Reference no: EM13711486

Questions Cloud

Find the angular acceleration of the tiller in the position : The mechanism shown in the figure has been employed as a marine steering linkage called a Raphson's slide. O2B represents the tiller and AC is the actuating rod that is pinned to the slider (link 3) which slides along the tiller. If the absolute velo..

Determine the factor of safety against static failure : A work platform is elevated on the end of a boom that has the ability to extend its length and vary its angle with respect to the ground. The platform width is large compared to the boom diameter so that it is possible to load the boom eccentrically ..

Find the magnitude of reactions at a and the tension in rope : A block is L = 1 [m] long and h = 0.5 [m] tall and weighs 50 [N]. The box is allowed to rotate about point A. A rope is attached to the upper left corner. This rope makes a Î¸=40Â° angle from the horizon. A horizontal force of 30 [N] is applied at th..

Converted at constant pressure to saturated steam : Liquid water is fed to a boiler at 24ºC and 10 bar is converted at constant pressure to saturated steam. Use the steam tables to calculate H (kJ/kg) for this process, and then calculate the heat input required to produce 15,000 m3/h of steam at the e..

Nozzle to keep it from moving horizontally backwards : A fireman is using a 10-cm inside-diameter fire hose is trying extinguish a fire. He is aiming the hose at 45Â° with respect to the horizontal and the water lands 30 m from the fire fighter. On the end of the fire hose is a nozzle. The inside diamete..

What is the discharge velocity : Air enters an adiabatic nozzle at 3 atm pressure and 100 F and emerges at 1 atm and 30 F. The inlet velocity is negligible. What is the discharge velocity?

What is the amplitude of the force transmitted to building : Consider a model of a building whose base moves as a result of an earthquake. The building can be modeled as a single-degree-of-freedom spring-mass system where the building mass is lumped on top of two beams used to model the walls of the building.

Changes in kinetic and potential energies is zero : Ten cubic feet of air is cooled at a constant pressure of 80 psi. The initial temperature is 180 0F and the final temperature is 100 0F. Assume air is an ideal gas, Cp = 0.241 Btu/lb 0R and Cv = 0.173 Btu/lb 0R and R = 1545 lbf/lbmol 0R, M = 28.97 lb..

Solid glass-polymer reinforced composite rod : Solid glass-polymer reinforced composite rod (diameter = 100 mm) is simultaneously torqued clockwise (T = 1,000 Nm) and given a tensile load (P = 0). Determine shear strain. Determine extensional strains in n and t directions.

User Account

All Pages