3. An 8-inch diameter steel shaft is force fit into a cast iron disk with a 20-inch outside diameter. The maximum tangential stress in the disk is 5000 psi. If Esteel = 30x106 psi and Ecast iron = 15x106 psi, with Poisson’s ratio  for both materials equals to 0.3, (a) Determine the contact pressure required between the shaft and the disk (A: p  3621 psi ). (b) Determine the decrease in the radius of the shaft (A: ds = 0.00034 inch). (c) Determine the required diametral interference (A: 2 = 004 in. (Hint: A change in the shaft radius or diameter can be obtained through the displacement in the shaft)

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explanation:

answer:

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the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

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explanation: