This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Some students are discussing why a simple Atwood machine accelerates. Jane says that because of ... (Read 24 times)

xroflmao

  • Hero Member
  • *****
  • Posts: 515
on: Jul 29, 2018
Some students are discussing why a simple Atwood machine accelerates.
 
  Jane says that because of the unequal masses, gravity exerts a constant external torque on the two-mass and pulley system and thus its total angular momentum increases at a constant rate. Is Jane's explanation a valid one?

Question 2

The attraction of the Moon causes tides on Earth. Because of friction, tidal action slows the rotation of Earth. What happens to the angular momentum of the Earth-Moon system, and does this affect the motion of the moon?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joshbk44

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 29, 2018
Answer to Question 1

Yes

Answer to Question 2

Since there are no external torques, the angular momentum is conserved. Since the Moon revolves around Earth in the same direction as Earth rotates, this means that the Moon's angular momentum about the center of mass of the Earth-Moon system has to increase.


xroflmao

  • Member
  • Posts: 515
Reply 2 on: Jul 29, 2018
Gracias!

connor417

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

The longest a person has survived after a heart transplant is 24 years.

Schematic hemodialysis machine Schematic hemodialysis machine
Students in class Students in class
Simple and Complex Carbohydrates Simple and Complex Carbohydrates
On average, students in Roman Catholic schools score higher on national tests than students in ... On average, students in Roman Catholic schools score higher on national tests than students in ...
Ecg MACHINE Ecg MACHINE
Micrographs and drawings of three types of simple epithelia, with examples of their functions and lo Micrographs and drawings of three types of simple epithelia, with examples of their functions and lo
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library