Displacement Vectors finding magnitude of R and theta

Click For Summary

Homework Help Overview

The discussion revolves around finding the magnitude of a resultant vector R formed by the addition of two displacement vectors A and B. The problem involves understanding vector addition and the application of trigonometric laws, specifically in the context of angles and magnitudes in a two-dimensional plane.

Discussion Character

  • Exploratory, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty about how to begin the problem, with some suggesting the use of the law of cosines to find the angle related to the resultant vector. Others mention the need to calculate the angle using cosine relationships.

Discussion Status

The discussion is ongoing, with participants exploring different approaches to the problem. Some guidance on using the law of cosines has been mentioned, but there is no clear consensus or resolution yet.

Contextual Notes

Participants are working with specific angles and relationships between the vectors, but details about the drawing or additional data are not provided in the discussion.

mariner962
Messages
6
Reaction score
0

Homework Statement



The displacement vectors A and B, when added together, give the resultant vector R, so that R= A+B . Use the data in the drawing and the fact that = 29° to find the magnitude R of the resultant vector and the angle θ that it makes with the +x axis.

I am unsure how to find the magnitude of R and theta
 

Attachments

  • 1-fc-018-alt.gif
    1-fc-018-alt.gif
    2.4 KB · Views: 1,408
Physics news on Phys.org
Any ideas where to start?
 
I know that the angle of 151 degrees is opposite the resultant and that i can use the law of cosines.
 
actually i know that i have to find that angle using cosines
 

Similar threads

Replies
5
Views
1K
Replies
1
Views
1K
Replies
14
Views
2K
Replies
2
Views
2K
  • · Replies 7 ·
Replies
7
Views
3K
Replies
1
Views
2K
Replies
5
Views
902
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K