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

Author Question: When an object is effectively isolated from external torques, like an ice skater twirling on the tip ... (Read 394 times)

JGIBBSON

  • Hero Member
  • *****
  • Posts: 538
on: Jul 28, 2018
When an object is effectively isolated from external torques, like an ice skater twirling on the tip of one skate, the angular momentum of the object
 a. can be increased by shifting mass out away from the axis of rotation.
  b. can be decreased by shifting mass out away from the axis of rotation.
  c. can be increased by shifting mass in toward the axis of rotation.
  d. can be decreased by shifting mass in toward the axis of rotation.
  e. cannot be changed except by friction at the point of contact.

Question 2

If 1.0 m3 of concrete weighs 5  104 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? (The compression strength of concrete is 1.7  107 N/m2)


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

duke02

  • Sr. Member
  • ****
  • Posts: 312
Reply #1 on: Jul 28, 2018
Answer to Question 1

e

Answer to Question 2

340 m


JGIBBSON

  • Member
  • Posts: 538
Reply 2 on: Jul 28, 2018
Thanks for the timely response, appreciate it

hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

External oblique External oblique
Visual Object Agnosia Without Prosopagnosia Visual Object Agnosia Without Prosopagnosia
Do you know what that large object in the center of the photo is? In the 1920s, 30s, and 40s, ... Do you know what that large object in the center of the photo is? In the 1920s, 30s, and 40s, ...
Pulegone, a cyclic monoterpene, can be isolated from the essential oil of pennyroyal, a member ... Pulegone, a cyclic monoterpene, can be isolated from the essential oil of pennyroyal, a member ...
Internal and external forces on the parties Internal and external forces on the parties
Video: Immune responses Animation

For a complete list of videos, visit our video library