Author Question: A person sits on a freely spinning lab stool (no friction). When this person extends her arms, A) ... (Read 93 times)

burchfield96

  • Hero Member
  • *****
  • Posts: 610
A person sits on a freely spinning lab stool (no friction). When this person extends her arms,
 
  A) her moment of inertia decreases and her angular velocity increases.
  B) her moment of inertia decreases and her angular velocity decreases.
  C) her moment of inertia increases and her angular velocity increases.
  D) her moment of inertia increases and her angular velocity decreases.
  E) her moment of inertia increases and her angular velocity remains the same.

Question 2

To determine the mass of a car, a student (with a friend at the wheel) pushes the car holding a bathroom scale between himself and the car and carefully maintains a constant reading of 400 N on the scale while the car accelerates on level ground.
 
  At the conclusion of the experiment his friend reports that the car accelerated from rest to 14.0 km/hr in 12.0 s. What was the mass of the car? A) 343 kg
  B) 1230 kg
  C) 2460 kg
  D) 3360 kg
  E) 3430 kg



zacnyjessica

  • Sr. Member
  • ****
  • Posts: 345
Answer to Question 1

D

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

Did you know?

Your heart beats over 36 million times a year.

For a complete list of videos, visit our video library