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Yuki888 [10]
3 years ago
7

6. On a quiet day, the atmospheric pressure results in a force of about 10,0000 N on a window pane with an area of 1 square mete

r. a. Why does this large force not shatter the window? b. How will this change if a strong wind is blowing across the window pane?
Physics
1 answer:
kherson [118]3 years ago
6 0

Explanation:

a. The same atmospheric pressure that's pushing the window from the outside is also pushing on the window from the inside.  So the forces are balanced.

b. If a strong wind is blowing <em>across</em> the window pane, the pressure will drop, as described by the Bernoulli principle.  So the pressure inside will be greater than the pressure outside, causing the window to bow out a little.

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A rectangular beam 200 mm deep and 300 mm wide is simply supported over a span of 8 m. What uniformly distributed load per metre
Alexandra [31]

The uniformly distributed load per meter the beam may carry will be 1.275 × 10 ⁶ N/mm.

<h3>What is bending stress?</h3>

When an object is subjected to a heavy load at a specific spot, it often experiences bending stress, which causes the object to bend and tire.

The given data in the problem is;  

Bending stress, σ = 120 N/mm2  

Moment of inertia, I = 8.5 × 106 mm⁴

Depth of beam, y = d/2 = 200/2 = 100 mm  

Length of beam, L = 8 m = 8000 mm  

Width of beam, W = 300 mm

The maximum bending moment of the beam with UDL;

\rm W = \frac{wL^2}{8}

From the bending equation;

\rm M = \frac{\sigma I}{y_{max}} \\\\ M = \frac{120 \ N / mm^2 \times 8.5 \times 10^6 }{100 \ mm } \\\\ M = 10.2 \times 10^6 \ N - mm

The maximum bending moment of the beam with UDL;

\rm M = \frac{wL^2}{8} \\\\  10.2 \times 10^6 = \frac{w \times 8^2}{8} \\\\ w = 1.275 \times 10^6 \  N/mm

Hence the uniformly distributed load per meter the beam may carry will be 1.275 × 10 ⁶ N/mm.

To learn more about the bending stress, refer;

brainly.com/question/24227487

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5 0
1 year ago
Which of the following is the most dense?
antiseptic1488 [7]
Warm salty water? I’m not 100% sure sorry
3 0
3 years ago
Why do telescopes give modern astronomers an advantage over people in the past
pochemuha

its because it allows modern astronomers  the ability to see farther out and more accuratly

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r was thirsty and decided to mix up a pitcher of lemonade. She put lemon juice, water, and sugar into a pitcher and stirred it t
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7 0
3 years ago
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A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.4 m
BaLLatris [955]

Answer: a) 0.78 m/s b) 1.57 m/s

Explanation:

M = father's mass


m = son's mass = M/3


V = father's initial speed


v = son's initial speed

(1/2)MV^2 = (1/2)*(1/2)*m v^2


M*V^2 = (1/2)(M/3)v^2


V^2/v^2 = 1/4


V = v/2

Second equation:


(1/2)M*(V + 1.4)^2 = (1/2)m*v^2


= (1/2)*(M/3)*(3V)^2


cancel out the M's and (1/2)'s


(V + 1.4)^2 = 3V^2


V^2 + 2.8V + 1.96 = 3V^2


V^2 -1.4V -0.98 = 0

V^2 = 0.98/0.4 = 2.45

V = 1.57

3 0
3 years ago
Read 2 more answers
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