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 50 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
Great answer, keep it coming :)

Perkypinki

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

The Xenopus frog tadpole is a small, simple vertebrate. The Xenopus frog tadpole is a small, simple vertebrate.
Simple and Complex Carbohydrates Simple and Complex Carbohydrates
A Simple Demonstration of Osmosis A Simple Demonstration of Osmosis
Drinking Alcohol use by college students Drinking Alcohol use by college students
The Impact of Cross-Ethnic Friendships on Minority Students’ Well-Being The Impact of Cross-Ethnic Friendships on Minority Students’ Well-Being
ECG machine. ECG machine.
Video: ATPase function - membrane transport, contractile proteins and synthesis

For a complete list of videos, visit our video library