In a needle biopsy, a narrow strip of tissue is extracted froma patient with a h

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In a needle biopsy, a narrow strip of tissue is extracted froma patient with a hollow needle. Rather than being pushed byhand, to ensure a clean cutthe needle can be fired into thepatient's body by a spring. Assume the needle has mass 5.60g,the light spring has force constant 375N/m, and the srping isoriginally compressed 8.10 cm. The tip of the needle thenmoves through 2.40 cm of skin and soft tissue, which exerts aresistive force of 7.60 N on it. Next, the needle cuts 3.50cm into an organ, which exerts a backward force of 9.20N onit. Find the speed at which a flange on the back of theneedle runs into a stop, set to limit the penetration to 5.90cm. I understand you find the Work done and then use KE= 1/2kx^2 -W. However I do not understand what number you use fork. If anyone can help me, I would greatly appreciateit.. In a needle biopsy, a narrow strip of tissue is extracted froma patient with a hollow needle. Rather than being pushed byhand, to ensure a clean cutthe needle can be fired into thepatient's body by a spring. Assume the needle has mass 5.60g,the light spring has force constant 375N/m, and the srping isoriginally compressed 8.10 cm. The tip of the needle thenmoves through 2.40 cm of skin and soft tissue, which exerts aresistive force of 7.60 N on it. Next, the needle cuts 3.50cm into an organ, which exerts a backward force of 9.20N onit. Find the speed at which a flange on the back of theneedle runs into a stop, set to limit the penetration to 5.90cm. I understand you find the Work done and then use KE= 1/2kx^2 -W. However I do not understand what number you use fork. If anyone can help me, I would greatly appreciateit..

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