University Physics with Modern Physics textbook problem. Enjoy. At a family picnic you are appointed to push your obnoxious cousin Throckmorton in a swing (Fig. 6.24a). His weight is w, the length of the chains is R, and you push Throcky until the chains make an angle with the vertical. To do this, you exert a varying horizontal force that starts at zero and gradually increases just enough that Throcky and the swing move very slowly and remain very nearly in equilibrium throughout the process. What is the total work done on Throcky by all forces? What is the work done by the tension T in the chains? What is the work you do by exerting the force (Neglect the weight of the chains and seat.)
Posted on: Mon, 20 Oct 2014 18:55:35 +0000
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