Answer:
10.984mm
Explanation:
by elastic modulus
stress=modulus of elasticity*strain
stress=loading/area area" cross-section"
11mm=0.011m
area=π(d/2)^2=π(0.011/2)^2=9.503*10^-5 square meter
stress=55000/(9.503*10^-5)=578.745 MPa
convert MPa and GPa to pascal.
strain=stress/modulus=(578.745*10^6)/(125*10^9)=0.00463............axial strain
v=Poisson ratio
lateral strain=(-v)*axial strain= -0.31*0.00463
lateral strain= -1.4353*10^-3=change in diameter/ original diameter
change in diameter=(-1.4353*10^-3)*0.011= -1.57883*10^-5 m
negative indicates decrease in diameter.
decrease in dia.=0.01578mm
new diameter=11-0.01578= 10.984mm
The question is incomplete. The complete question is :
The solid rod shown is fixed to a wall, and a torque T = 85N?m is applied to the end of the rod. The diameter of the rod is 46mm .
When the rod is circular, radial lines remain straight and sections perpendicular to the axis do not warp. In this case, the strains vary linearly along radial lines. Within the proportional limit, the stress also varies linearly along radial lines. If point A is located 12 mm from the center of the rod, what is the magnitude of the shear stress at that point?
Solution :
Given data :
Diameter of the rod : 46 mm
Torque, T = 85 Nm
The polar moment of inertia of the shaft is given by :
J = 207.6 
So the shear stress at point A is :
Therefore, the magnitude of the shear stress at point A is 4913.29 MPa.
Answer:
solution in the picture attached
Explanation:
With which type of media are you interacting when you read an online shopping website?
A. film
B. print
C. electronic
<h3><u>D. social </u><u>media</u></h3>
Digital media/social media. Normally through ads
Answer:
A. 450 btu/h
Explanation:
We solve this problem by using this formula:
Q = U x TD x area
U = U value of used material
TD = Temperature difference = 60°
Q = heat loss
Area = 3x5 = 15
We first find U
R = 1/u
2 = 1/U
U = 1/2 = 0.5
Then when we put these values into the formula above, we would have:
Q = 0.5 x 15 x 60
Q = 450Btu/h
Therefore 450btu/h is the answer
