Rotational Dynamics

Rotational Inertia


<div class="wp-block-create-block-problemblock">A massless string is wrapped around a disk of rotational inertia I = ##\frac{1}{2} m R^2## .  The disk falls and spins as it falls, unraveling the rope.  Determine the tension in the string and the acceleration of the disk.<br /><img src="/old/images/yoyoinertia.gif"  alt="yoyo rotational inertia torque "></div>


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https://www.youtube.com/watch?v=qulOlXbCOm8&#038;t=0s
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