International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN: 9781305501607
Author: Andrew Pytel And Jaan Kiusalaas
Publisher: CENGAGE L
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Chapter 8, Problem 8.70P
Use numerical integration to find the centroid of the volume generated by revolving the area shown about the x-axis.
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14.10. A liquor containing 15 per cent
solids is concentrated to 55 per cent
solids in a double-effect evaporator.
operating at a pressure in the second
effect of 18 kN/m². No crystals are
formed. The flowrate of feed is 2.5 kg/
s at 375 K with a specific heat capacity
of 3.75 kJ/kg K. The boiling-point rise of
the concentrated liquor is 6 deg K and the
steam fed to the first effect is at 240 kN/
m². The overall heat transfer coefficients
in the first and second effects are 1.8 and
0.63 kW/m²K. respectively. If the heat
transfer area is to be the same in each
effect, what areas should be specified?
D
A
14.9. A forward feed double-effect vertical
evaporator, with equal heating areas in
each effect, is fed with 5 kg/s of a liquor
of specific heat capacity of 4.18 kJ/kg K.
and with no boiling point rise, so that 50
per cent of the feed liquor is evaporated.
The overall heat transfer coefficient in the
second effect is 75 per cent of that in the
first effect. Steam is fed at 395 K and the
boiling point in the second effect is 373 K.
The feed is heated by an external heater to
the boiling point in the first effect.
It is decided to bleed off 0.25 kg/s of
vapour from the vapour line to the second
effect for use in another process. If the
feed is still heated to the boiling point of
the first effect by external means, what
will be the change in steam consumption
of the evaporator unit? For the purpose of
calculation, the latent heat of the vapours
and of the steam may both be taken as
2230 kJ/kg
Ад
O
correct the shaft misalignment in a cars transmission system, determine the offset distance required to correct the shaft misalignment of 4 degrees in a rotating system. shaft diameter is 4cm.
Chapter 8 Solutions
International Edition---engineering Mechanics: Statics, 4th Edition
Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Use integration to determine the coordinates of...Ch. 8 - Using integration, locate the centroid of the area...Ch. 8 - Determine the y-coordinate of the centroid of the...Ch. 8 - Determine the y-coordinate 0f the centroid of the...Ch. 8 - Use integration to locate the centroid of the...
Ch. 8 - Locate the centroid of the parabola by...Ch. 8 - Use integration to locate the centroid of the...Ch. 8 - The parametric equations of the plane curve known...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - Use the method of composite areas to calculate the...Ch. 8 - The plane region is bounded by a semicircle of...Ch. 8 - The centroid of the plane region shown is at C....Ch. 8 - Compute the centroidal coordinates of the L-shaped...Ch. 8 - Find the centroidal coordinates of the plane...Ch. 8 - Using the method of composite areas, find the...Ch. 8 - Given that the centroid of the plane region is at...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Using the method of composite curves, locate the...Ch. 8 - Determine the ratio a/b for which the centroid of...Ch. 8 - Use numerical integration to locate the centroid...Ch. 8 - Determine the centroidal coordinates of the plane...Ch. 8 - Compute the centroidal y-coordinate of the plane...Ch. 8 - The equation of the catenary shown is y = 100 cosh...Ch. 8 - Use integration to locate the centroid of the...Ch. 8 - By integration, find the centroid of the surface...Ch. 8 - Locate the centroid of the volume obtained by...Ch. 8 - Solve Prob. 8.41 assuming that the triangle is...Ch. 8 - Use integration to find the centroidal coordinates...Ch. 8 - Solve Prob. 8.43 assuming that the area is...Ch. 8 - Verify the centroidal z-coordinate of the pyramid...Ch. 8 - Use integration to compute the z-coordinate of the...Ch. 8 - Determine the centroidal z-coordinate of the...Ch. 8 - Prob. 8.48PCh. 8 - Locate the centroid of the volume between the...Ch. 8 - Prob. 8.50PCh. 8 - Prob. 8.51PCh. 8 - By the method of composite volumes, determine the...Ch. 8 - By the method of composite volumes, determine the...Ch. 8 - By the method of composite volumes, determine the...Ch. 8 - By the method of composite volumes, determine the...Ch. 8 - By the method of composite volumes, determine the...Ch. 8 - By the method of composite volumes, determine the...Ch. 8 - Use the method of composite volumes to determine...Ch. 8 - The cylindrical container will have maximum...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - Using the method of composite surfaces, locate the...Ch. 8 - The picture board and its triangular supporting...Ch. 8 - By the method of composite curves, locate the...Ch. 8 - By the method of composite curves, locate the...Ch. 8 - By the method of composite curves, locate the...Ch. 8 - Use numerical integration to find the centroid of...Ch. 8 - Prob. 8.71PCh. 8 - Locate the centroid of the volume generated by...Ch. 8 - Prob. 8.73PCh. 8 - Prob. 8.74PCh. 8 - Prob. 8.75PCh. 8 - A 6-in. diameter hole is drilled in the conical...Ch. 8 - A torus is formed by rotating the circle about the...Ch. 8 - A solid of revolution is formed by rotating the...Ch. 8 - Compute the volume of the spherical cap that is...Ch. 8 - Calculate the surface area of the truncated sphere...Ch. 8 - The rim of a steel V-belt pulley is formed by...Ch. 8 - Determine the volume of the machine part shown.Ch. 8 - A solid is generated by rotating the plane area...Ch. 8 - Prob. 8.84PCh. 8 - Find the surface area of the 90 duct elbow.Ch. 8 - Determine the volume of the concrete arch dam.Ch. 8 - (a) Find the volume of liquid contained in the...Ch. 8 - Compute the surface area of the axi-symmetric...Ch. 8 - The steel cylinder with a cylindrical hole is...Ch. 8 - The hemispherical glass bowl is filled with water....Ch. 8 - What is the ratio L/R for which the uniform wire...Ch. 8 - Small screws are used to fasten a piece of...Ch. 8 - Prob. 8.93PCh. 8 - 3.94 The aluminum cylinder is attached to the...Ch. 8 - Prob. 8.95PCh. 8 - Prob. 8.96PCh. 8 - Prob. 8.97PCh. 8 - Locate the center of gravity of the hammer if the...Ch. 8 - Prob. 8.99PCh. 8 - The cylindrical water tank with R = 10 ft and H =...Ch. 8 - Prob. 8.101PCh. 8 - Five 34-in. diameter holes are to be drilled in a...Ch. 8 - Wind pressure acting on a cylinder can be...Ch. 8 - Prob. 8.104PCh. 8 - The pressure acting on the square plate varies as...Ch. 8 - Prob. 8.106PCh. 8 - Prob. 8.107PCh. 8 - If the intensity of the line loading is...Ch. 8 - Prob. 8.109PCh. 8 - The intensity of the line loading acting on a...Ch. 8 - Determine the resultant force or resultant couple...Ch. 8 - The inside surface of each thin shell carries a...Ch. 8 - Calculate the resultant force caused by the water...Ch. 8 - Determine the resultant force acting on the elbow...Ch. 8 - Determine the smallest distance I) that would...Ch. 8 - Each of the three gates has a constant width 1:...Ch. 8 - The concrete dam shown in cross section holds back...Ch. 8 - A concrete seawater dam is shown in cross section....Ch. 8 - Determine the force F required to pull up the...Ch. 8 - The normal pressure acting on the triangular plate...Ch. 8 - One side of the container has a 03-m square door...Ch. 8 - The 12-ft wide quarter-circular gate AB is hinged...Ch. 8 - The center of gravity of the plane wire figure is...Ch. 8 - The 10-m wide gate restrains water at a depth of 6...Ch. 8 - Find the resultant of the line load shown.Ch. 8 - Prob. 8.126RPCh. 8 - Determine the centroidal coordinates of the volume...Ch. 8 - Prob. 8.128RPCh. 8 - Prob. 8.129RPCh. 8 - Prob. 8.130RPCh. 8 - Using the method of composite areas, find the...Ch. 8 - Find the centroid of the truncated parabolic...Ch. 8 - Prob. 8.133RPCh. 8 - A solid of revolution is formed by rotating the...Ch. 8 - Two hemispherical shells of inner diameter 1 m are...Ch. 8 - Calculate the area of the surface generated when...Ch. 8 - Determine the resultant of the line loading, given...Ch. 8 - Determine the centroidal coordinates of the plane...Ch. 8 - The sheet metal trough has a uniform wall...Ch. 8 - The trough is filled with water (=62.4lb/ft3)....Ch. 8 - The thin-walled cylindrical can with a spherical...Ch. 8 - Find the location of the centroid of the shaded...
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