Question: When force P is applied to the rigid arm ABC, point B displaces vertically downward through a distance of 0 . 4 5 mm .

When force P is applied to the rigid arm ABC, point B displaces vertically downward through a distance of 0.45 mm . The strain in wire CD is in elastic range.
The normal strain developed in wire CD is most nearly:
When force P is applied to the rigid arm ABC,

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