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02-12-2016
Mathematics

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what is the angular velocity of a 6-foot pendulum that takes 3 seconds to complete an arc of 14.13 feet?

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droopymiss droopymiss

02-12-2016

First find the central angle A in degree. Perimeter circle 2Pi*R --> 360 deg Arc A = 14.13 --> x deg (360*14.13)/2Pi*R = 5086.8/37.68 = 135 deg The pendulum rotates 135 deg in 3 sec. Then, the angular velocity is : 135/3 = 45 deg/sec i think

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