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Question: f1 n1 figure p134 a timing belt similar to that...

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F1 n1 FIGURE P13.4 A timing belt similar to that shown in Figure P13.4 having 0.05 lb/in. weight is used to transfer power from an engine to a grinding wheel. The largest permissible force in the belt equals F 500 lb, and both engine and wheel rotate at the same speed of n 4200 rpm. What is the optimum pulley pitch radius r for largest power transfer? Hint: maximum power, P = V(Fi-F,), transfer occurs when aP/aV = 0, where F, is the centrifugal force. 13.6

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