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gtnhenbr [62]
3 years ago
13

Calculate the reactions at 4 ends (supports) of this bookshelf. Assume that the weight of each book is approximately 1 lb. The w

idth of shelf is 10inches and its length is 40 inches. (Hint: Model the shelf as a beam with distributed load).

Engineering
1 answer:
hoa [83]3 years ago
8 0

Answer:

R = 4.75 lb  (↑)

Explanation:

Number of books = n = 19

Weight of each book = W = 1 lb

Length of the bookshelf = L = 40 inches

We can get the value of the distributed load as follows

q = n*W/L = 19*1 lb/ 40 inches = 0.475 lb/in

then the reactions at 4 ends (supports) of the bookshelf are

R = (q/2)/2 = 4.75 lb

We can see the bookshelf in the pic.

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3 years ago
A reservoir is 1 km wide and 10 km long and has an average depth of 100m. Every hour, 0.1% of the reservoir's volume drops throu
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Answer:

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Height = 100m

Volume = 10x10³x10³x100

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Next we find the volume flow rate

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To get the electrical power output developed by the turbine with 92 percent efficiency

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7 0
3 years ago
Which best explains Susan B Anthony purpose in her speech “Women’s rights to the suffrage”
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She wrote and delivered a speech in 1873, which came to be known as the “Women's Rights to the Suffrage” speech. In her address, she lets the audience know of her “crime” of voting. She reminds the listener that the Constitution of the United States says “we the people” and does not exclude women as people

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Una empresa realizó en el ejercicio de compras al contado por valor
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A geothermal heat pump absorbs 15 KJ/s of heat from the Earth 15 m below a house. This heat pump uses a 7.45 kJ/s compressor.
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Answer:

COP of the heat pump is 3.013

OP of the cycle is  1.124

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Given

a)

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