Assume a person bends forward to lift a load "with his back" as shown in Figure (a). The spine pivots mainly at the fifth lumbarvertebra, with the principal supporting force provided by the erector spinalis muscle in the back. To see the magnitude of theforces involved, consider the model shown in Figure (b) for a person bending forward to lift a W, = 205-N object. The spine andupper body are represented as a uniform horizontal rod of weight W, = 320 N, pivoted at the base of the spine. The erectorspinalis muscle, attached at a point two-thirds of the way up the spine, maintains the position of the back. The angle between thespine and this muscle is 0 = 10.5°.Back muscleR,PivotRW2a(a) Find the tension T in the back muscle.N(b) Find the compressional force in the spine.(c) Is this method a good way to lift a load?O YesNoExplain your answer, using the results of parts, using the results of parts (a) and (b).This answer has not been graded yet.(d) Can you suggest a better method to lift a load? Explain.This answer has not been graded yet.Need Help?Read It

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