'While exercising in a fitness center, a man lies face down on a bench and lifts a weight with one lower leg by contacting the muscles in the back of the upper leg. (a) Find the angular acceleration produced given the mass lifted is 10.0 kg at a distance of 28.0 cm from the knee joint, the moment of inertia of the lower leg is 0.900 kg ⋅ m2 , the muscle force is 1500 N, and its effective perpendicular lever arm is 3.00 cm. (b) How much work is done if the leg rotates through an angle of 20.0º with a constant force exerted by the muscle? OpenStax™ is a registered trademark, which was not involved in the production of, and does not endorse, this product. If you don\'t have the OpenStax™ \"College Physics\" textbook, here is a link in which you can download it for FREE! https://d3bxy9euw4e147.cloudfront.net/oscms-prodcms/media/documents/CollegePhysics-OP.pdf SUBSCRIBE if you\'d like to see more solutions for your textbook! https://www.youtube.com/channel/UC2C34WdYMOm47PkWovvzLpw?sub_confirmation=1 Want us as your private tutor? Get started with your FREE initial assessment! https://glasertutoring.com/contact/ #RotationalKineticEnergy #RotationalMotion #OpenStaxPhysics'
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