(a) what is the approximate magnitude of force (in N) a martial arts instructor uses to break a board it her hand's speed a time of impac is 10.5 mys and decreasing to 1.05 m/s during a 0.00200 s time-of-contact with the board? The mass of her hand and am is 1.15 kg. (b) Estimate the shear stress (in N/m), assuming this force is exerted on a 1.00 cm-thick pine board that is 10.0 cm wide. Nim he heand henak
(a) what is the approximate magnitude of force (in N) a martial arts instructor uses to break a board it her hand's speed a time of impac is 10.5 mys and decreasing to 1.05 m/s during a 0.00200 s time-of-contact with the board? The mass of her hand and am is 1.15 kg. (b) Estimate the shear stress (in N/m), assuming this force is exerted on a 1.00 cm-thick pine board that is 10.0 cm wide. Nim he heand henak
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter12: Static Equilibrium And Elasticity
Section: Chapter Questions
Problem 12.58AP: (a) Estimate the force with which a karate master strikes a board, assuming the hands speed at the...
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I just need help with part b, thanks!!
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