Applied Fluid Mechanics 7th. Edition by Mott, Robert L., Untener, Joseph A | 9781292019611 | 0132558920 | Holooly

Applied Fluid Mechanics [EXP-22151]

140 SOLVED PROBLEMS

Question: 16.1

A 1-in-diameter jet of water having a velocity of 20 ft/s is deflected 90° by a curved vane, as shown in Fig. 16.3. The jet flows freely in the atmosphere in a horizontal plane. Calculate the x and y forces exerted on the water by the vane. deflection h is 7.40 in. Compute the velocity of flow

Verified Answer:

Using the force diagram of Fig. 16.4, we can write...

Question: 5.4

A brass cube 6 in on a side weighs 67 lb. We want to hold this cube in equilibrium under water by attaching a light foam buoy to it. If the foam weighs 4.5 lb/ft^3, what is the minimum required volume of the buoy? Complete the solution before looking at the next panel.

Verified Answer:

Calculate the minimum volume of foam to hold the b...

Question: 13.2

A centrifugal pump must deliver at least 200 gal/min of water at a total head of 300 ft of water. Specify a suitable pump. List its performance characteristics.

Verified Answer:

One possible solution can be found from Fig. 13.28...

Question: 5.2

A certain solid metal object weighs 60 lb when measured in the normal manner in air, but it has such an irregular shape that it is difficult to calculate its volume by geometry. Use the principle of buoyancy to calculate its volume and specific weight.

Verified Answer:

It is given that the weight of the object is 60 lb...

Question: 5.1

A cube 0.50 m on a side is made of bronze having a specific weight of 86.9 kN/m^3. Determine the magnitude and direction of the force required to hold the cube in equilibrium when completely submerged (a) in water and (b) in mercury. The specific gravity of mercury is 13.54.

Verified Answer:

Consider part (a) first. Imagine the cube of bronz...

Question: 5.3

A cube 80 mm on a side is made of a rigid foam material and floats in water with 60 mm of the cube below the surface. Calculate the magnitude and direction of the force required to hold it completely submerged in glycerin, which has a specific gravity of 1.26.Complete the solution before looking

Verified Answer:

First calculate the weight of the cube, then the f...

Question: 10.10

A distribution system for liquid propane is made from steel hydraulic tube, 32 mm OD × 2.0 mm wall. Several 90° bends are required to fit the tubes to the other equipment in the system. The specifications call for the radius to the inside of each bend to be 200 mm. When the system carries 160

Verified Answer:

Darcy’s equation should be used to compute the ene...

Question: 1.3

A load of 200 pounds (lb) is exerted on a piston confining oil in a circular cylinder with an inside diameter of 2.50 inches (in). Compute the pressure in the oil at the piston. See Fig. 1.4.

Verified Answer:

To use Eq. (1–3), we must compute the area of the ...

Question: 11.2

A lubricating oil must be delivered through a horizontal DN 150 Schedule 40 steel pipe with a maximum pressure drop of 60 kPa per 100 m of pipe. The oil has a specific gravity of 0.88 and a dynamic viscosity of 9.5 * 10^-3 Pa·s. Determine the maximum allowable volume flow rate of oil.

Verified Answer:

Figure 11.4 shows the system. This is a Class II s...

Question: 11.3

A lubricating oil must be delivered through the piping system shown in Fig. 11.7 with a maximum pressure drop of 60 kPa between points 1 and 2. The oil has a specific gravity of 0.88 and a dynamic viscosity of 9.5 * 10^{-3} Pa·s. Determine the maximum allowable volume flow rate of oil.

Verified Answer:

The system is similar to that in Example Problem 1...

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