Everyday application: Suppose a yo-yo has a center shaft that has a 0.250 cm 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 of 1.50 m/s2 , what is the angular acceleration of the yo-yo? (b) What is the angular velocity after 0.750 s if it starts from rest? (c) The outside radius of the yo-yo is 3.50 cm. What is the tangential acceleration of a point on its edge?

Step-by-step solution Step 1 of 3 (a) Angular acceleration calculated from below mention relation between angular acceleration And linear acceleration, Here, is the linear acceleration, is the angular acceleration and is the radius of the center shaft. Substitute, , Hence, angular acceleration is Step 2 of 3 (b) Angular velocity of the yo-yo calculated from the equation of kinematics, Here, is the angular final velocity, is the angular acceleration and is the angular initial velocity, is time taken. Substitute, Angular velocity of the yo-yo is .