$($a$)$ If the ultimate shear strength of steel is taken to be $2\mathrm{.}60108$ Pa$,$ what force is required to punch through a steel plate $1\mathrm{.}60$ cm thick? Assume the superhero's fist has cross$-$sectional area of $1\mathrm{.}17102$ cm$2$ and is approximately circular.

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To calculate the force required to punch through a steel plate we need to consi... View the full answer