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 37 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
YES! Correct, THANKS for helping me on my review

ashely1112

  • Member
  • Posts: 347
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

The Xenopus frog tadpole is a small, simple vertebrate. The Xenopus frog tadpole is a small, simple vertebrate.
A simple motif, the β-α-β loop A simple motif, the β-α-β loop
Prokaryotic cells are have a relatively simple structure Prokaryotic cells are have a relatively simple structure
A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt
How to solve simple percent word problems (Part 1) How to solve simple percent word problems (Part 1)
ECG machine ECG machine
Video: HIV replication/ Replication cycle of HIV

For a complete list of videos, visit our video library