How is Angular Momentum Related to Linear Momentum?

Click For Summary

Homework Help Overview

The discussion revolves around the relationship between angular momentum and linear momentum, framed within a series of questions related to torque, rotational dynamics, and the properties of objects in motion. The subject area includes concepts from mechanics, particularly focusing on angular motion and its implications.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to solve multiple-choice questions related to angular momentum and torque but expresses difficulty in finding the answers. Some participants question the effort put into understanding the material, while others encourage showing work to facilitate discussion.

Discussion Status

The discussion is ongoing, with the original poster indicating they have made progress on some questions but still seek assistance on others. Participants are prompting for clarification and deeper engagement with the problems presented.

Contextual Notes

The original poster mentions the test's difficulty and implies that they have consulted their textbook, suggesting a constraint of time or understanding in the context of homework rules.

vballkatie22
Messages
21
Reaction score
0
Help with Angular Momentum!

I am trying to figure out these questions and i just don't know. So I thought maybe you could help me.

Thanks

1: A bolt on a car engine is to be tightened with a torque of 35 Newton meters. If you have a 25 cm long wrench, what force should you exert?
1.4 N
1.4 x 102 N
8.8 N
8.8 x 10-1 N

2: Two disks have the same mass, but one (designated as D) has twice the diameter of the other (designated as d). Which would be harder to start rotating?
D
d
They are equally hard to rotate
Not enough information given


5: The direction of the rotation of a spinning object can be changed only by applying a(n) ______.
Force
Torque
Velocity
None of the Above

6: To relate the Angular momentum of a particle with its linear momentum, you need the particle’s:
Displacement from the origin
Distance from the origin
Velocity vector
Torque

7: Mass is an analogous linear quantity to the angular form of:
Weight
Torque
Inertia
Acceleration

8: As a gyroscope slows down due to friction, the rate of precession increases due to:
The direct relationship between angular momentum and precession
The inverse relationship between inertia and angular acceleration
The direct relationship between torque and angular acceleration
The inverse relationship between angular momentum and precession

9: The heavy rim around a Frisbee is useful because it gives it:
A large moment of inertia
A small moment of inertia
A decrease in the gyroscopic effect
An increase in it’s precession

10: An object moving in a circle at constant speed has:
No acceleration
Acceleration tangent to the circle
Acceleration towards the center of the circle
Acceleration away from the center of the circle
 
Physics news on Phys.org


You need to help yourself first before you can expect anyone to help you on this forum. It's the rules. Many of these questions are easy. Did you look at the book?
 
Last edited by a moderator:


buffordboy23 said:
You need to help yourself first before you can expect anyone to help you on this forum. It's the rules. Many of these questions are easy. Did you look at the book?

I did look at the book. This test is HARD! I figured out most of the questions but still have three more to go.
 


Which ones? Show your work/discuss your thinking for each.
 

Similar threads

Replies
5
Views
1K
Replies
335
Views
17K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 9 ·
Replies
9
Views
1K
  • · Replies 45 ·
2
Replies
45
Views
4K
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
10
Views
3K
  • · Replies 18 ·
Replies
18
Views
4K
  • · Replies 25 ·
Replies
25
Views
12K