Posted by **Una** on Sunday, December 18, 2011 at 12:39pm.

I need help with this question please. A solid cylinder of mass m and radius R has a string wound around it. A person holding the string pulls it vertically upward such that the cylinder is suspended in midair for a brief time interval ¡ãt and its center of mass does not move. The tension in the string is T, and the rotational inertia of the cylinder about its axis is ¨ö mR^2.

What is the linear acceleration of the person¡¯s hand during the time interval ¡ãt?

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