Question
Everyday application: Suppose a yo-yo has a center shaft that has a 0.250 cm radius and that its string is being pulled.
1. If the string is stationary and the yo-yo accelerates away from it at a rate of $1.50 \textrm{ m/s}^2$, what is the angular acceleration of the yo-yo?
2. What is the angular velocity after 0.750 s if it starts from rest?
3. The outside radius of the yo-yo is 3.50 cm. What is the tangential acceleration of a point on its edge?

a) $600 \textrm{ rad/s}^2$

b) $450 \textrm{ rad/s}$

c) $21.0 \textrm{ m/s}^2$

Solution Video