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defon
15 days ago
10

A solid cylinder is concentric with a straight pipe. The cylinder is 0.5 m long and has an outside diameter of 8 cm. The pipe ha

s an inside diameter of 8.5 cm. The annulus between the cylinder ad the pipe contains stationary oil. The oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. Most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?
Engineering
1 answer:
alex41 [359]15 days ago
7 0
The force required to move the cylinder amounts to 25.6 N. Further explication involves given values: length of the cylinder, l = 0.5 m; outer diameter of the cylinder, d = 8 cm = 0.08 m; outer radius of the cylinder; inside diameter of the pipe, d = 8.5 cm = 0.085 m; inside radius of the pipe; specific gravity of the oil; density of the oil; kinematic viscosity of the oil; velocity of the cylinder, u = 1 m/s. The objective is to determine the force necessary to advance the cylinder. Let F be the required force. The specific gravity is the ratio of a substance's density to that of water. Kinematic viscosity denotes the inherent resistance of a fluid under gravity when no other external forces are applied. Key equations lead to the result: F = 25.6 N.
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At a certain elevation, the pilot of a balloon has a mass of 120 lb and a weight of 119 lbf. What is the local acceleration of g
mote1985 [299]

Response:

1) g=31.87ft/s^2

2)m=120

W=119.64lbf

Clarification:

initial segment

the weight of an object with a specified mass is determined using the equation

W=mg

we need to convert 120lb into slug

m=120lbx1slug/32.147lb=3.733slug

calculating for g

g=W/m

g=119/3.733=31.87ft/s^2

subsequent segment

the mass remains unchanged

m=120lb=3.733slug

Weight

W=3.733slug*32.05ft/s^2=119.64lbf

4 0
1 month ago
A copper-constantan thermocouple is to be used to measure temperatures between 0 and 200°C. The e.m.f. at 0°C is 0 mV, at 100°C
Kisachek [356]
3.941%
5 0
8 days ago
3/63 A 2‐kg sphere S is being moved in a vertical plane by a robotic arm. When the angle θ is 30°, the angular velocity of the a
Kisachek [356]

Answer:

Ps=19.62N

Explanation:

A thorough explanation of the answer can be found in the attached files.

5 0
1 month ago
A hydraulic cylinder is to be used to move a workpiece in a manufacturing operation through a distance of 50 mm in 10 s. A force
Viktor [391]

Response:

The solution to this question is 1273885.3 ∅

Clarification:

The first step is to ascertain the required hydraulic flow rate liquid based on the working pressure if a cylinder with a piston diameter of 100 mm is utilized.

Given that,

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The time t =10 seconds

The force F = 10kN

The piston diameter = 100mm

The pressure = F/A

10 * 10^3/Δ/Δ

P = 1273885.3503 pa

Subsequently

Power = work/time = Force * distance /time

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50 = 1273885.3 ∅

5 0
13 days ago
. A storm sewer is carrying snow melt containing 1.200 g/L of sodium chloride into a small stream. The stream has a naturally oc
Kisachek [356]

Answer:

Explanation:

In a steady-state condition, the total volume exiting matches the total volume entering, and

the total amount of salt entering equals the total amount of salt exiting.

The volume entering each minute is = 2000 + 2 x 10³ x 60

= 122000 L.

The total salt entering per minute = 1200 x 2000 + 20 x 2 x 10³ x 60

= 2400000 + 2400000 mg

= 4800000 mg.

The volume of water exiting each minute = 122000 L.

The total salt exiting each minute = 4800000 mg.

The concentration of salt in the exiting water = 4800000 / 122000

= 39.344 mg / L.

3 0
1 month ago
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