Answer:
Tresca FOS ,N=4.49
Von mises theory FOS N=4.27
Explanation:
Cross sectional area of shaft A=
Bending stress =101.91 MPa (M=10 KN-m)
Shear stress =40.76 MPa (T=8 KN-m)
Axial stress=19.23 MPa
Now find the principle stress
Now put the values
From tresca theory
N=4.49
From Von mises theory
N=4.27
Answer:
sum2 = 0
counter = 0
lst = [65, 78, 21, 33]
while counter < len(lst):
sum2 = sum2 + lst[counter]
counter += 1
Explanation:
The counter variable is initialized to control the while loop and access the numbers in <em>lst</em>
While there are numbers in the <em>lst</em>, loop through <em>lst</em>
Add the numbers in <em>lst</em> to the sum2
Increment <em>counter</em> by 1 after each iteration
Answer:
<em>d. floor spans exceed that which is economical with site-cast or hollow-core slabs and exceed 60 feet.</em>
<em></em>
Explanation:
<em>
Double tee slabs are prestressed concrete castings usually about 100 m to 150 m long</em>. <em>They are usually used in the construction industry in structures requiring a long floor span (or roof span) exceeding 60 feet in length, that is required to bear additional load (additional load carrying capability</em>). Double tee slabs are usually employed in construction because they shorten construction time. reduce congestion at the construction site, and also reduce construction cost.
<em>They are the required choice in construction when the cost of site casting or hollow-core slabs is no longer economical due to the length of the structure exceeding 60 feet.</em>
Defining the radius of area throat to inlet we would have that the proportional relationship would be
This equation or relationship is obtained from continuity where
Now applying the Bernoulli equation between inlet and throat section we have,
Here,
Then for a Venturi duct, the velocity of the airplane will be
Our values are,
Replacing,
Therefore the velocity of the airplane is 154.7ft/s
Answer:29,930 kJ
Explanation:
Given
Car starts with an initial elevation of 500 m and drives up a hill to reach a final elevation of 2000 m
Final velocity (V)=20 m/s
Energy of car increases by 100 kJ
mass of car(m)=2000 kg
Total Energy=29,430+400+100=29,930 kJ