Question

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4. Luay is running with a horizontal velocity, along level ground. While running, he encounters a 2.51 m vine of negligible mass; the vine was hanging vertically from a tall tree limb and the end of the vine is directly level with his center of mass. Luay decides to grab the vine and swing, because he loves experiencing uniform circular motion. At the maximum height, Luay takes mental note that the angle the vine makes with the vertical is 21°. Ignore any elastic properties the vine may have. im = 605 KW (a) (5 points) At the instant Luay grabs the vine, he is undergoing circular motion. Identify the external force on Luay that is supplying the centripetal force for his motion. Tens fo (b) (5 points) Determine Luay's centripetal acceleration. (c) (15 points) Determine the magnitude of the external force identified above, at the begin- ning of the swing. 17.013 m Toolbox Pe-mgh 6

Answer 1

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