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Q. Comic-book superheroes are sometimes able to punch holes through steel walls.

(a) If the ultimate shear strength of steel is taken to be 2.50x 10^9 Pa, what force is required to punch through a steel plate 2.2cm thick? Assume the superhero's fist has cross-sectional area of 8.00x 10^1 cm2 and is approximately circular.

Your response differs significantly from the correct reply. Rework your solution from the beginning and check each step carefully.

(b) qualitatively, what would take place to the superhero on delivery of the punch? What physical law applies?

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Category:- Physics
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