A thin light string is wrapped around the outer rimof a uniform hollow cylinder of mass 4.90 kghaving inner and outer radii as shown in the figure.20.0cm35.0 cmThe cylinder is then released from rest.For related problem-solving tips and strategies, youmay want to view a Video Tutor Solution ofAcceleration of a primitive yo-yo. Part Byou just dropped this cylinder without anystring, how fast would its center be moving whenit had fallen the distance in part A?IfExpress your answer in meters per second.

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A thin spherical shell has a radius of 0.90 m. An applied torque of 920 N m imparts to the shell an angular acceleration equal to 4.70 rad/s2 about an axis through the center of the shell. What is the rotational inertia of the shell about the axis of rotation? Calculate the mass of the shell.
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