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ryzh [129]
3 years ago
14

A 12-mm-diameter cylindrical jet of water discharges vertically into the ambient air. Due to surface tension the pressure inside

the jet will be slightly higher than the surrounding atmospheric pressure. Determine this difference in pressure.

Engineering
1 answer:
navik [9.2K]3 years ago
3 0

Answer:

Explanation:

Given

Diameter of cylindrical is d=12\ mm

There is excess Pressure in the cylindrical jet which can be  calculated by using Equilibrium free body  Diagram of an element of jet

excess Pressure force will balance the Surface tension force of water jet

\Delta P\times Area=Surface\ tension \times length

\Delta P\cdot 2R\delta l=\sigma \times 2\delta l

where \sigma =surface tension of water

\Delta P=excess Pressure

R=radius

\delta l=length of element

therefore \Delta P=\frac{\sigma }{R}

Surface Tension of water is \sigma =7.34\times 10^{-2}\ N/m

\Delta P=\frac{7.34\times 10^{-2}}{6\times 10^{-3}}

\Delta P=12.23\ Pa

     

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7.35 and 7.36 For the beam and loading shown, (a) draw the shear and bending-moment diagrams, (b) determine the maximum absolute
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Maximum absolute values of the shear = 28 KN

Maximum absolute values of bending moment = 5.7 KN.m

<h3>How to draw Shear Force and Bending Moment Diagram?</h3>

A) We can see the beam loaded in the first image attached.

For the shear diagram, let us calculate the shear from point load to point load.

From A to C, summing vertical to zero gives; ∑fy = 0: -20 - V = 0

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At point C, taking moment about point C and equating to zero gives;

M_C = 0. Thus; 20(0.225) + M = 0

M = -4.5 KN.m

At point D, taking moment about point D and equating to zero gives;

M_D = 0. Thus; 20(0.525) - 48(0.3) + M = 0

M = 3.9 KN.m

At point E, taking moment about point E and equating to zero gives;

M_D = 0. Thus; 20(0.75) - 48(0.525) + 20(0.225) + M = 0

M = 5.7 KN.m

At point B, taking moment about point E and equating to zero gives;

M_E = 0. Thus; 20(1.05) - 48(0.825) + 20(0.525) + (20 * 0.3) + M = 0

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2) From the attached diagrams, we can deduce that;

Maximum absolute values of the shear = 28 KN

Maximum absolute values of bending moment = 5.7 KN.m

Read more about shear force & bending moment diagram at; brainly.com/question/14834487

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