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The top pulleys of a Weston diff erential pulley block have diameters of 210 and 190 mm. Determine the eff ort required to raise a load of 150 kg if the efficiency of the system is 35%. What is the work done in overcoming friction when the load is raised through a height of 2.5 m?
A flashlight beam has an exit power of 100mW, an exit diameter of 3.8cm, and a divergence of 1.1. Calculate the intensity in mW/cm2 at 55m and the size of the beam at that distance.
engine B is supercharged with after cooling and has cylinder inlet condition of 80c and 130 k pa to avoid knock problem it is desirable to have the air-fuel temperature at the start of combustion in engine B to be the same as in engine A calculate..
First stage is heating up the material. We will have cylindrical billet that is setting in a die and we heat it up. Heat coming in from anywhere else. How is the temperature changing? What are the energy going in and out and how they influence the..
Cyclopentadiene and cyclohexanone are combined in a reactor and undergo an addition reaction. The adduct can either have an endo or exo conformation. For the application your plant has only the endo conformation is desired.
Use the plane stress transformation equations to find the normal stress and the magnitude of the shear stress on plane A-A for the stress acting at a point in a machine component shown below section A-A angle 35, stress x = 115 Mpas, stress y=80 Mpas..
an irrigation pump is used to draw water from a reservoir and deliver it to an irrigation ditch at a mass flow rate of
a heat pump will be used to heat a building during the winter and will then cool the same space during the summer. the
find the force f required to hold the plug in place at the exit of the water pipe. the flow rate is 1.5 m3s the
a fin array consists of 6 rectangular fins on a 2mm thick 100mm by 180mm plate. the array is made of aluminum and each
Determine the magnitude of the load, the acceleration of the load when it is 25 mm from the equilibrium position and (c) the tension in the spring when the load is 25 mm from the equilibrium position.
Find the angular velocity and angular acceleration of the pulley at an instant when the bucket is going down at a speed of 20 cm/s and has an acceleration of 4.0 m/s2.
A simple beam of span length 3.2 m carries a uniform load of intensity 48 kN/m. The cross section of the beam is a hollow box with wood flanges and steel side plates, as shown in the figure. The wood flanges are 75 mm by 100 mm in cross section, a..
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