3. A high-wire walker always attempts to keep his center of mass over the wire (or rope). He normally carries a long, heavy pole to help. If he leans to his right and is in danger of rotating around the wire, he moves the pole to his left to slow the rotation and allow himself time to adjust his balance. Assume that the walker has a mass of 70.0 kg and a rotational inertia of 15.0 kg ∙ m2 about the wire. What is the magnitude of his angular acceleration about the wire if his center of mass is 5.0 cm to the right of the wire and a) he carries no pole and b) the 14.0 kg pole he carries has its center of mass 10 cm to the left of the wire?