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3 years ago

Help plsss fast!!!!!!

Engineering

1 answer:

Semmy [17]3 years ago

8 0

Answer:

1. Cast iron or aluminum

2. aluminum (first blank) iron(second blank)

3. aluminum

4. dry sleeve

5. Wet sleeve

6. matching operation that cuts a series of holes through the block for crankshaft bearing

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A rectangular steel bar, with 8" x 0.75" cross-sectional dimensions, has equal and opposite moments applied to its ends.

denpristay [2]

Answer:

Part a: The yield moment is 400 k.in.

Part b: The strain is $8.621 \times 10^{-4} in/in$

Part c: The plastic moment is 600 ksi.

Explanation:

Part a:

As per bending equation

$\frac{M}{I}=\frac{F}{y}$

Here

M is the moment which is to be calculated
I is the moment of inertia given as

$I=\frac{bd^3}{12}$

Here

b is the breath given as 0.75"
d is the depth which is given as 8"

$I=\frac{bd^3}{12}\\I=\frac{0.75\times 8^3}{12}\\I=32 in^4$

y is given as

$y=\frac{d}{2}\\y=\frac{8}{2}\\y=4"\\$

Force is 50 ksi

$\frac{M_y}{I}=\frac{F_y}{y}\\M_y=\frac{F_y}{y}{I}\\M_y=\frac{50}{4}{32}\\M_y=400 k. in$

The yield moment is 400 k.in.

Part b:

The strain is given as

$Strain=\frac{Stress}{Elastic Modulus}$

The stress at the station 2" down from the top is estimated by ratio of triangles as

$F_{2"}=\frac{F_y}{y}\times 2"\\F_{2"}=\frac{50 ksi}{4"}\times 2"\\F_{2"}=25 ksi$

Now the steel has the elastic modulus of E=29000 ksi

$Strain=\frac{Stress}{Elastic Modulus}\\Strain=\frac{F_{2"}}{E}\\Strain=\frac{25}{29000}\\Strain=8.621 \times 10^{-4} in/in$

So the strain is $8.621 \times 10^{-4} in/in$

Part c:

For a rectangular shape the shape factor is given as 1.5.

Now the plastic moment is given as

$shape\, factor=\frac{Plastic\, Moment}{Yield\, Moment}\\{Plastic\, Moment}=shape\, factor\times {Yield\, Moment}\\{Plastic\, Moment}=1.5\times400 ksi\\{Plastic\, Moment}=600 ksi$

The plastic moment is 600 ksi.

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When a motorist passes a bicyclist, what is the minimum legal distance (clearance) to leave between vehicle and bike? *

Vladimir79 [104]

There is no legal minimum distance

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We know that passengers can be either helpful or harmful to a driver. Describe a pro and a con of having passengers in your car.

anygoal [31]

Answer:

sub to pewdipie

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Find the volume of water displaced and position of center of buoyancy for a wooden block of width 2.5m and of depth 1.5m. When i

Lostsunrise [7]

Answer:

The mass density of a fluid is 980 kg/m3. ... If the specific gravity of a liquid is 0.79, determine its mass density and specific ... A wooden block of size 1m x 0.5m x 0.4m is floating in water with 0.4 m side ...

Explanation:

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https://brainly.in/question/43010943?tbs_match=3

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Answers of science book<br><br>

vitfil [10]

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