Yo-Yo's Inertia A yo-yo has a rotational inertia of 810 g · cm2 and a mass of 190 g. Its axle radius is 3.6 mm, and its string is 70 cm long. The yo-yo rolls from rest down to the end of the string.(adsbygoogle = window.adsbygoogle || []).push({});

I've tried 4 or 5 ways to get linear accel, but none work. b, c, d, and e are straight forward once you get a, but I haven't been able to successfully get it. Can anyone show me how to go about getting linear accel? Thanks

(a) What is its linear acceleration?

cm/s2

(b) How long does it take to reach the end of the string?

s

(c) As it reaches the end of the string, what is its linear speed?

cm/s

(d) As it reaches the end of the string, what is itstranslational kinetic energy?

J

(e) As it reaches the end of the string, what is its rotational kinetic energy?

J

(f) As it reaches the end of the string, what is its angular speed?

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# Homework Help: Yo Yo and Inertia!

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