mass of 15 washers=130g avg. mass of a washer=8.66666667 g radius of motion (cm) 50 number of washers on clip 6 mass of washers on clip 60g weight of washers on clip .588 N time for 30 revolutions 18.83 s time for single revolution 0.63 s A.calculate the time for a single revolution and the average speed using equation v=2pir/t  b. calculate the expected value for the average speed by setting f=mg(6.4) and f=mv^2/r(6.5) equal to each ohter.  the weight of the hanging washers is providing the centriperal force in 6.5.

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