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Chapter 10, Problem 061 A 15.0 kg wheel, essentially a thin hoop with radius 2.30 m, is rotating at 165 rev/min. It must be brought to a stop in 26,.0 s. (a) How much work must be done to stop t (b) What . It must be is the required average power? Give absolute valuesfor both parts. (a) Number (b) Number l the tolerance is +/-50%-units Units SHOW HINT

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Answer #1

Given: Mass, M-15 Kg Radius, r-2.3 m Time, t-26s Initial angular speed, ax165 2π 60 0.1047 x165 17.27rad Initial angular spee

Substituting the known values in equation (1), W-0.5x79.35 x(17.272 -0) -39.675x 298.2529 W 11833.18J Part (b) Average power

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