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A gun is so designed that, on firing, the barrel recoils against a spring. A dashpot, at the end of the recoil, allow the barrel to come back to its initial position within the minimum time without any oscillation. The gun barrel has a mass of 500 kg and a recoil spring of 300 N/m. The barrel recoils 1 m on firing. Determine the (i) initial recoil velocity of the gun barrel, and (ii) critical damping coefficient of the dashpot engaged at the end of the recoil stroke.
a nylon pipe has a bore of 50 mm and a wall thickness of 5 mm. it covered with insulation of 10 mm thick. the thermal
frictionless piston in a cylinder with 0.2 kg h2o under it. if piston raises to a given height the piston will hit
the closed tank is pressurized at 15 psig by air as shown. the liquid is water. determine the velocity of the water
a wind turbine to be mounted on an offshore platform is 20 efficient. in that area the average wind speed is 24 kmh at
A 10 cm cube of aluminium initially in the oven at a temperature of 300c is immersed in boiling water at a constant temperature if 100c and the convection coefficient of h=900 w/m^2.c
If the maximum temperature in the cycle is not to exceed 2200 K, determine the thermal efficiency and the mean effective pressure.
An insulated rigid container is separated into two parts using a partition that is free to move and the partition allows heat transfer without any energy storage by itself. Initially 2 kg of air at 5 bar and 350 K is contained on one side of the part..
An incompressible steady ?ow of a ?uid, such as a strati?ed ?ow of salt water (as in the isthmus between a fresh body of water and a body of salt water), ?ows in a channel with a sudden change in the height of the channel bottom (this allows for n..
a natural gas-fired furnace in a textile plant is used to provide steam at 130 c. at times of high demand the furnace
The solid circular aluminium rod has a diameter d=40 mm and can be subjected simultaneously to a torque T in the direction shown and to a tensile axial load P. The modulus of elasticity is E=73 Gpa, and the shear modulus G= 28 Gpa.
total power required to overcome viscous resistance and wave drag is 11.4 mw. use the perfomance characteristics of the
air at 40oc 1 bar and a volumetric flow rate of 60 m3min enters an insulated control volume operating at steady state
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