Posted: October 31st, 2020

Explain why the angular velocity was constant over time at the second

Post lab 7------------------------------------------------------------------------------1. If you want to push a merry-go-round and make it as easy as possible, where should you tell your friendsto sit? Where should you push? Explain why?2. What would happen to the data graphs (the ones we were printing in lab), if we tied the string aroundone of the smaller pulleys in this experiment? Explain why?3. Explain why the angular velocity was constant over time at the second part of the experiment but it wasnot constant at the first part of the experiment. By the first part of the experiment, I mean the part whichinvolved hanging masses. The angular velocities were not constant over time for all of the pegs.By second part of the experiment I mean the part that involved dropping the ring. Before dropping thering the angular velocity was constant. Also, it was constant over time after dropping (only it had alower value.)4. We assumed that the cylinders were point masses for calculating inertia. We could have used the parallelaxis theorem to do better. Test this for the two masses in hole 1 and compare (percent difference orerror) the new Ical with the old one.5. A 10kg baby is perched at the rim of a 40kg disk. The disk rotates freely in a horizontal plane at 1 rev/s.The baby crawls to point at the center of the disk. What is the frequency of rotation in rev/s when thebaby arrives at the center (Assume the size of the baby and the frictional torques are negligibly small)?6. What was the intercept of our final graph supposed to be? That’s the I vs. r2 graph. Don’t write number,just name.

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