A punching press is required to punch 40 mm diameter holes in a plate of 15 mm thickness at the rate of 30 holes per min

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answerhappygod
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A punching press is required to punch 40 mm diameter holes in a plate of 15 mm thickness at the rate of 30 holes per min

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A punching press is required to punch 40 mm diameter holes in aplate of 15 mm thickness at the rate of 30 holes per minute. Itrequires 6 N-m of energy per mm2 of sheared area. Determine themoment of inertia of the flywheel if the punching takes one-tenthof a second and the rpm of the flywheel varies from 160 to 140.
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