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schepotkina [342]
2 years ago
10

The Driver of a vehicle on a level road determined that she could increase her speed from rest to 50 mi/h in 12.8 sec and from r

est to 65 mi/h in 19.8 sec. If it can be assumed that the acceleration of the vehicle takes the form: (du/dt) = (alpha) - (beta)*(u(t)) Determine the maximum acceleration of the vehicle.
Engineering
1 answer:
Ket [755]2 years ago
6 0

Answer:

maximum acceleration is  1.746 m/s²

Explanation:

given data

\frac{du}{dt} = (α) - (β) ×(u(t))  

speed = rest to 50 mi/h = 22.352 m/s

time =  12.8 sec

speed = rest to 65 mi/h = 29.05 m/s

time =  19.8 sec

solution

we get here maximum acceleration of vehicle that is

maximum acceleration = \frac{\frac{du}{dt} }{t}

maximum acceleration = \frac{v1-V2}{t}    ...............1

put here value

maximum acceleration = \frac{22.352-0}{12.8}

maximum acceleration = 1.746 m/s²

and for another vehicle

maximum acceleration = \frac{29.05-0}{19.8}

maximum acceleration = 1.46 m/s²

so here maximum acceleration is  1.746 m/s²

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Problem 5) Water is pumped through a 60 m long, 0.3 m diameter pipe from a lower reservoir to a higher reservoir whose surface i
kap26 [50]

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\epsilon = 0.028*0.3 = 0.0084

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20.4 - (f [\frac{l}{d}] +kl) \frac{v_1^2}{2g} = 10

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4 0
2 years ago
A single crystal of a metal that has the FCC crystal structure is oriented such that a tensile stress is applied parallel to the
morpeh [17]

The magnitude of applied stress in the direction of 101 is 12.25 MPA and in the direction of 011, it is not defined.                                          

<u>Explanation</u>:        

<u>Given</u>:

tensile stress is applied parallel to the [100] direction

Shear stress is 0.5 MPA.

<u>To calculate</u>:

The magnitude of applied stress in the direction of [101] and [011].

<u>Formula</u>:

zcr=σ cosФ cosλ

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5 0
2 years ago
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