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Section 15.2 gave the normal range of spur gear face widths as 9/P to 14/P, and Section 16.2 stated that it is usually desirable to make b ≥ 2.0 pa. Accordingly, it is desired to make a helical gear with face width equal to 13/P and also equal to 2.2pa. What helix angle is required to do this? How does this compare with the commonly used range of helix angles cited in Section 16.2? Refer to Figure P16.1.
The solid aluminum bar of circular cross section is fitted snugly between two immovable walls. Determine the temperature increase that would cause the bar to buckle. Use E = 10:3 × 106 psi and α = 12:8 × 106/°F for aluminum.
a petrol engine uses 204 kg of petrolh of calorific value 43 mjkg. the thermal efficiency of the engine is 20.
For the beam shown, calculate the shear and bending moment at points 6 ft and 16 ft from the left end using free-body diagrams.
the crane shown below consists of a 10 m swinging arm that is pinned at point a in the horizontal axis. the load at
most of the energy we consume as food is converted to thermal energy in the process of performing all our bodily
If this house is to be heated by electric resistance heaters, determine the required rated power of these heaters in Btu/h to maintain the house at constant temperature.
refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at
the rate of heat transfer from the working fluid passing through the condenser to the cooling water, in kJ per kg of steam entering the first-stage turbine.
Locate the points on the cross section where the neutral axis crosses the y- and the z-axes.
A compressed air tank contains 5 kg of air at a temperature of 80 0c. A gage on the tank reads 300 kPa. Determine the volume of the tank.
A bar made from a material with a elasticity of 122 GPa and with a cross sectional area of 17 cm2 is attached at point C to a spring with a constant k of 322 MN/m. The lengths L1 and L2 are 0.1 m and 0.4 m, respectively. If the force has a magnitude ..
Find the equation of motion of the uniform rigid bar and Will the force transmitted to the base of a spring mounted machine decrease with the addition of viscous damping?
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