Q.

A sheet metal 2 mm thick having a shear strength of 40 kg/cm2 is to receive a punch hole of 35 mm diameter. The force required to make the punching will be

A. 12,540 kg
B. 88 kg
C. 4400 kg
D. 2200 kg
E. 17,600 kg
Answer» B. 88 kg
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