• Support PF! Buy your school textbooks, materials and every day products Here!

Finding Magnitude and Direction using Component Method?

  • Thread starter OUmecheng
  • Start date
  • #1
18
0

Homework Statement




Consider the three displacement vectors A = ( -2i + 3j ) m, B = ( 2i + 7j ) m, and C = ( -7i + 5j ) m. Use the component method to determine the following.

(a) The magnitude and direction of D = A + B + C
|D| = ___ m
θ = ___° (from the +x axis)

(b) The magnitude and direction of E = -A - B + C

|D| = ___ m

θ = __° (from the +x axis)





The Attempt at a Solution




I don't even know where to begin.
 

Answers and Replies

  • #2
SammyS
Staff Emeritus
Science Advisor
Homework Helper
Gold Member
11,237
962

Homework Statement



Consider the three displacement vectors A = ( -2i + 3j ) m, B = ( 2i + 7j ) m, and C = ( -7i + 5j ) m. Use the component method to determine the following.

(a) The magnitude and direction of D = A + B + C
|D| = ___ m
θ = ___° (from the +x axis)

(b) The magnitude and direction of E = -A - B + C

|D| = ___ m

θ = __° (from the +x axis)

The Attempt at a Solution



I don't even know where to begin.
Can you find the components of vector D?


For vector A:

Can you calculate |A|, the magnitude of A?

Can you calculate the angle which vector A make with the +x-axis?
 

Related Threads for: Finding Magnitude and Direction using Component Method?

Replies
30
Views
17K
Replies
5
Views
5K
  • Last Post
Replies
7
Views
5K
  • Last Post
Replies
4
Views
2K
Replies
12
Views
26K
Replies
1
Views
5K
Replies
14
Views
6K
Replies
10
Views
32K
Top