* will be awarded to the correct answer (One tryleft!!!) A 61.0 kg diver stepsof

Question

* will be awarded to the correct answer (One tryleft!!!) A 61.0 kg diver stepsoff a 14.0 m tower and dropsstraight down into the water. If he comes to rest 7.00 m beneath the surface of the water,determine the average resistance force exerted by the water on thediver. * will be awarded to the correct answer (One tryleft!!!) A 61.0 kg diver stepsoff a 14.0 m tower and dropsstraight down into the water. If he comes to rest 7.00 m beneath the surface of the water,determine the average resistance force exerted by the water on thediver.

Explanation / Answer

The conservative system is thefreely-falling diver and the water supplies the external force. The change in the mechanical energy of the diver is E = mgh = 61kg(9.8m/s2)21 m = 12553.8 J. Fapp7m = E. Fapp = 12553.8J / 7m = 1793.4 N.

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