Energy in Oscillation Video Lessons

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Problem: A string is attached to a light rod with a 1 cm radius on a disk, as shown in the figure below. If the rod spins in one direction, the string will wind around it. If it spins in the opposite direction, the string unwinds. If the string is attached at the opposite end to a 100 N/m spring, initially unstretched, and the rod is twisted for 2 revolutions, what is the maximum angular speed of the disk will have after the rod is let go? The disk has a mass of 10 kg and a radius of 10 cm.

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Problem Details

A string is attached to a light rod with a 1 cm radius on a disk, as shown in the figure below. If the rod spins in one direction, the string will wind around it. If it spins in the opposite direction, the string unwinds. If the string is attached at the opposite end to a 100 N/m spring, initially unstretched, and the rod is twisted for 2 revolutions, what is the maximum angular speed of the disk will have after the rod is let go? The disk has a mass of 10 kg and a radius of 10 cm.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Energy in Oscillation concept. You can view video lessons to learn Energy in Oscillation. Or if you need more Energy in Oscillation practice, you can also practice Energy in Oscillation practice problems.

How long does this problem take to solve?

Our expert Physics tutor, Jeffery took 4 minutes and 39 seconds to solve this problem. You can follow their steps in the video explanation above.