Question: 5 . The energy required to punch a square from 2 0 mm thick plate is 1 0 KJ . If the ultimate strength of

5. The energy required to punch a square from 20 mm thick plate is 10 KJ . If the ultimate strength of plate is 420 Mpa, determine the maximum sides of square that can be punched.
A.45 mm
B.30 mm
C.60 mm
D.55 mm
5 . The energy required to punch a square from 2

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