Circular blanks of 10 mm diameter are punched from an aluminum sheet of 2 mm th

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Circular blanks of 10 mm diameter are punched from an aluminum sheet of 2 mm thickness. The
shear strength of aluminum is 80 MPa. The minimum punching force required in kN is

Options:

A . 2.57

B . 3.29

C . 5.03

D . 6.33

Answer: Option C

-NA-

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