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Unformatted text preview: Problem 71: In the position shown, bar AB has an angular velocity of 5 rad/s clockwise. Determine the angular velocity of bars BC and CD . Problem 72: The 3in radius wheel rotates about the fixed point D with an angular velocity of 5 rad/s counterclockwise. Assume the radial distance AD equals 2.5 in. Determine the velocity of the slider at B and the angular velocity of the rod AB when 35 = o . Problem 73: A wheel with radius R rolls on a circular surface of radius 3 R . At the instant shown in the diagram, the velocity of point D at the center of the wheel is 2 m/s directed downward. The radial distance OA equals 0.9 R , where R = 0.2 m. At this same instant, point B is sliding freely at the bottom of the circular path. Determine the angular velocity of bar AB and the velocity of point B . Explain if/how your results will be different if at the same instant, the surface was rectangular as shown in the following diagram. ~ lv0Cf ~ b\'2jc\~s \1ornm srkd Vvk\St fC)\;or"e.6tth'fcVJ,<,h...
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 Spring '08
 MehdiAhmadizadeh

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