The Reynolds number, rhoVD/μ is a very important parameter in fluid mechanics. Determine its value for ethyl alcohol flowing at
1 answer:
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Given:
Outer Diameter, OD = 90 mm
thickness, t = 0.1656 mm
Poisson's ratio, = 0.334
Strength = 320 MPa
Pressure, P =3.5 MPa
Formula Used:
1). =
2). factor of safety, m =
Explanation:
Now, for Inner Diameter of cylinder, ID = OD - 2t
ID = 90 - 2(1.65) = 86.7 mm
Outer radius, = 45mm
Inner radius, = 43.35 mm
Now by using the given formula (1)
=
=
=93.74 MPa
Now, Using formula (2)
factor of safety, m = \frac{320}{93.74} = 3.414
Answer:
27009.56 mm
Explanation:
Given:
Diameter of the aluminium alloy bar, d = 12.5 mm
Length of the bar, L = 27 m = 27 × 10³ mm
Tensile force, P = 3 KN = 3 × 10³ N
Elastic modulus of the bar, E = 69 GPa = 69 × 10³ N/mm²
Now,
for the uniaxial loading, the elongation or the change in length (δ) due to the applied load is given as:
where, A is the area of the cross-section
or
or
A = 122.718 mm²
on substituting the respective values in the formula, we get
or
δ = 9.56 mm
Hence, the length after the force is applied = L + δ = 27000 + 9.56
= 27009.56 mm