Answer:
a)
aB = 240 mm/s² (↓)
aA = - 345 mm/s²
b) For the Block C
v₀ = 130 mm/s
For the Block A
v₀ = - 43.33 mm/s
c) Δx = 727.5 mm
Explanation:
a) For the Block B
v = v₀ + a*t
480 = 0 + a*(2)
aB = 240 mm/s² (↓)
Then we have
3*LA + 4*LB + LC = L
If we apply
d(3*LA + 4*LB + LC)/dt = dL/dt
3*vA + 4*vB + vC = 0
d(3*vA + 4*vB + vC)/dt = d(0)/dt
3*aA + 4*aB + aC = 0
aA = - (4*aB + aC) / 3
aA = - (4*240 mm/s² + 75 mm/s²) / 3
aA = - 345 mm/s²
b) For the Block C
v = v₀ + a*t
v₀ = v – a*t
v₀ = 280 – (75)(2) = 130 mm/s
For the Block A
When t = 2 s
vB = 480 mm/s
vC = 280 mm/s
we use the formula
3*vA + 4*vB + vC = 0
3*vA + 4*(480) + 280 = 0
vA = - 733.33 mm/s
Now, we can apply
v = v₀ + a*t
- 733.33 mm/s = v₀ + (- 345 mm/s2)(2 s)
v₀ = - 43.33 mm/s
c) We can use the equation
Δx = v₀*t + (1/2)*a*t²
Δx = 130*(3) + (1/2)(75)(3)²
Δx = 727.5 mm
Answer:
when you're going to need a designer a builder an electrical builder and a mechanic and you're going to need to be careful with what you use for all those things but the bike need to build you'll need a structure
Answer:
-60
Explanation:
The moment in the wrench is given by the force multiplied by the perpedincular distance to the bolt. If the force in turning in a clockwise, negative direction, -10 x (2 + 4) = -60 lb-ft.
Answer with Explanation:
There are various factors that needed to be taken into account while deciding the factor of safety some of which are summarized below as:
1) Importance of the structure: When we design any structure different structures have different importance in our society. Take an example of hospital, in case a natural disaster struck's a place the hospital should be the designed to withstand the disaster as it's role in the crisis management following a disaster is well understood. Thus while designing it we need it to have a higher factor of safety against failure when compared to a local building.
2) Errors involved in estimation of strength of materials: when we design any component of any machine or a structure we need to have an exact idea of the behavior of the material and know the value of the strength of the material. But many materials that we use in structure such as concrete in buildings have a very complex behavior and we cannot estimate the strength of the concrete absolutely, thus we tend to decrease the strength of the concrete more if errors involved in the estimation of strength are more to give much safety to the structure.
3) Variability of the loads that may act on the structure: If the loads that act on the structure are highly variable such as earthquake loads amd dynamic loads then we tend to increase the factor of safety while estimating the loads on the structure while designing it.
4) Economic consideration: If our project has abundant funds then we can choose a higher factor of safety while designing the project.
Answer:
Answer for the question:
In , the industries with the most complaints to the Better Business Bureau were banks, cable and satellite television companies, collection agencies, cellular phone providers, and new car dealerships (USA Today, April 16, 2012). The results for a sample of complaints are contained in the DATAfile named BBB. Click on the datafile logo to reference the data."
is explained in the attachment.
Explanation:
