A 0.985 kg yo-yo with an average radius of 0.0610 m is released from rest and...

A 0.985 kg yo-yo with an average radius of 0.0610 m is released from rest and takes 4.84 s to fall 0.218 m.

The tension in the yo-yo string is N.

The value of the yo-yo’s moment of inertia is kgm2.

Find the yo-yo’s rotational velocity when the string has just reached its full length. rads/sec.

How much rotational kinetic energy does the yo-yo have? J

Once the yo-yo gets to the bottom of the string is does the trick called “Walking the Dog” in which it stays at the bottom, but keeps spinning. If the yo-yo decelerates at a rate of 3.33 rads/sec^2 and has a new radius of 0.00923 m, what is the coefficient of friction between the string and the axle? (You may get an unrealistic answer because of the variables in the problem.)

Expert Solution

genius_generous answered 2 years ago

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