Suppose a yo-yo has a center shaft that has a0.240cm radius and that its string is being pulled. (a) If the string is stationary and the yo-yo accelerates away from it at a rate of1.80m/s2, what is the angular acceleration of the yo-yo in rad/s2? (b) What is the angular velocity in rad/s after 0.750 s if it starts from rest? (c) The outside radius of the yo-yo is3.10cm. What is the tangential acceleration in m/s2of a point on its edge?