Penetrates 83078

A hammer with a mass of 600 g hits the head of a nail at a speed of 5 m/s. If the nail penetrates 3 cm into the wall, what is the average resistive force of the masonry?

Correct answer:

F =  250 N

Step-by-step explanation:

m=600 g kg=600:1000  kg=0.6 kg v=5 m/s s=3 cm m=3:100  m=0.03 m  E=21 m v2=21 0.6 52=215=7.5 J  E = W = F s  F=E/s=7.5/0.03=250 N



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