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poizon [28]
3 years ago
15

2. When performing an alignment, what action should be taken immediately after putting a vehicle on the rack?

Engineering
1 answer:
mash [69]3 years ago
3 0
D...................
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A 1.5-m-long aluminum rod must not stretch more than 1 mm and the normal stress must not exceed 40 MPa when the rod is subjected
Pavlova-9 [17]

Answer:

the required diameter of the rod is 9.77 mm

Explanation:

Given:

Length = 1.5 m

Tension(P) = 3 kN = 3 × 10³ N

Maximum allowable stress(S) = 40 MPa = 40 × 10⁶ Pa

E = 70 GPa = 70 × 10⁹ Pa

δ = 1 mm = 1 × 10⁻³ m

The required diameter(d)  = ?

a) for stress

The stress equation is given by:

S = \frac{P}{A}

A is the area = πd²/4 = (3.14 × d²)/4

S = \frac{P}{(\frac{3.14*d^{2} }{4}) }

S = \frac{4P}{{3.14*d^{2} } }

3.14*S*{d^{2}} = {4P}

{d^{2}} =\frac{4P}{3.14*S}

d=  \sqrt{\frac{4P}{3.14*S} }

Substituting the values, we get

d=  \sqrt{\frac{4*3*10^{3} }{3.14*40*10^{6} } }

d=  \sqrt{\frac{12000 }{125600000  } }

d=  \sqrt{9.55*10^{-5}  }

d = (9.77 × 10⁻³) m

d = 9.77 mm

b) for deformation

δ = (P×L) / (A×E)

A = (P×L) / (E×δ) = (3000 × 1.5) / (1 × 10⁻³ × 70 × 10⁹) = 0.000063

d² = (4 × A) / π = (0.000063 × 4) / 3.14

d² = 0.0000819

d = 9.05 × 10⁻³ m = 9.05 mm

We use the larger value of diameter = 9.77 mm

3 0
3 years ago
Consider an open loop 1-degree-of-freedom mass-spring damper system. The system has mass 4.2 kg, and spring stiffness of 85.9 N/
Marat540 [252]

Answer:

Damping ratio  \zeta =0.0342

Explanation:

Given that

m=4.2 kg,K=85.9 N/m,C=1.3 N.s/m

We need to find damping ratio

We know that critical damping co-efficient

 C_c=2\sqrt {mk}

 C_c=2\sqrt {4.2\times 85.9}

 C_c=37.98 N.s/m

Damping ratio(\zeta) is the ratio of damping co-efficient to the critical damping co-efficient

So \zeta =\dfrac{C}{C_c}

\zeta =\dfrac{1.3}{37.98}

\zeta =0.0342

So damping ratio  \zeta =0.0342

 

3 0
4 years ago
Which contemporary jazz artist was one of the first to use a synthesizer in their recording
ivolga24 [154]

Answer:

In this era, Sun Ra was among the first of any musicians to make extensive and pioneering use of synthesizers and other various electronic keyboards; he was given a prototype Minimoog by its inventor, Robert Moog.

Explanation:

3 0
2 years ago
A water tank is completely filled with liquid waterat 20°C.The tank material is such that it can withstand tensioncaused by a vo
Xelga [282]

Answer:

Highest temperature rise allowable = ΔT = 21.22°C

Highest allowable temperature = ΔT + 20 = 41.22°C

Explanation:

From literature, the coefficient of volume expansion of water between 20°C and 50°C = β = (0.377 × 10⁻³) K⁻¹

Volume expansivity is given by

ΔV = V β ΔT

ΔV = Change in volume

V = initial volume

β = Coefficient of volume expansion = (0.377 × 10⁻³) K⁻¹ = 0.000377 K⁻¹

ΔT = Change in temperature = ?

It is given in the question that maximum volume increase the tank can withstand is

(ΔV/V) × 100% = 0.8%

(ΔV/V) = 0.008

V β ΔT = ΔV

β ΔT = (ΔV/V)

β ΔT = 0.008

ΔT = (0.008/β)

ΔT = (0.008/0.000377)

ΔT = 21.22°C

Highest temperature rise allowable = ΔT = 21.22°C

Highest allowable temperature = ΔT + 20 = 41.22°C

Hope this Helps

5 0
4 years ago
Do any of you have an email to contact brainly support? The contact us does not seem to work. Thanks!
Marysya12 [62]

Answer:

I think that if you go to the settings page, there should be a "contact us" option.

Hope this helped!!  :)

3 0
3 years ago
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