A steel wire of length 2.05mm with circular cross section must stretch no more t

Question

A steel wire of length 2.05mm with circular cross section must stretch no more than 0.260cmcm when a tensile (stretching) force of 370NN is applied to each end of the wire.

Part A

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dmin = mm A steel wire of length 2.05mm with circular cross section must stretch no more than 0.260cmcm when a tensile (stretching) force of 370NN is applied to each end of the wire. Part A What minimum diameter dmin rm mm d_min = mm Pa . SubmitHintsMy AnswersGive UpReview Part dmin Y = 2.00½1011Pa d_min is required for the wire? Express your answer in millimeters. Take Young's modulus for steel to be Y

Explanation / Answer

Apply Y = FLo/A(delta L)

(2.00 X 1011) = (370)(2.05)/(pi)(r2)(2.6 X 10-3)

r = 6.81 X 10-4 m

d = 2r = 1.36 X 10-3 m

That is 1.36 mm

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