« previous next »

Author Question: An ice skater has a moment of inertia of 5.0 kgm2 when her arms are outstretched. At this time she ... (Read 72 times)

Hungry!

  • Hero Member
  • *****
  • Posts: 1,071
on: Jul 29, 2018
An ice skater has a moment of inertia of 5.0 kgm2 when her arms are outstretched. At this time she is spinning at 3.0 revolutions per second (rps).
 
  If she pulls in her arms and decreases her moment of inertia to 2.0 kgm2, how fast will she be spinning?
  A)
 
  2.0 rps
 
  B)
 
  3.3 rps
 
  C)
 
  7.5 rps
 
  D)
 
  8.4 rps
 
  E)
 
  10 rps

Question 2

State Einstein's principle of equivalence.
 
  What will be an ideal response?


kardosa007

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

There is no experiment observers can perform to distinguish if an acceleration arises because of a gravitational force or because their reference frame is accelerated.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Remedies for insomnia include increased physical exercise and time spent outdoors. Remedies for insomnia include increased physical exercise and time spent outdoors.
When Union troops pushed toward Richmond in June of 1862, these slaves crossed the Rappahannock Rive When Union troops pushed toward Richmond in June of 1862, these slaves crossed the Rappahannock Rive
Having a time zone map located near the telephone will assist you when making long distance calls ou Having a time zone map located near the telephone will assist you when making long distance calls ou
Keep your arms in front of your body as you work. Keep your arms in front of your body as you work.
Men and women work the same number of hours a week, but men spend more time on paid work, and women ... Men and women work the same number of hours a week, but men spend more time on paid work, and women ...
Time vs. USA Population Exponential Time vs. USA Population Exponential
Video: ATPase function - membrane transport, contractile proteins and synthesis

For a complete list of videos, visit our video library