Math Problem Statement

For the three vectors shown in (Figure 1), A⃗ +B⃗ +C⃗ =1ȷ^A→+B→+C→=1ȷ^. What is vector B⃗ B→?

Figure

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Part A

Write B⃗ B→ in component form.

Express your answer in terms of the unit vectors i^i^ and j^j^. Use the 'unit vector' button to denote unit vectors in your answer.

Solution

To determine vector B⃗ in component form, we use the given vector equation:

A+B+C=1j^A⃗ + B⃗ + C⃗ = \mathbf{1\hat{j}}

This equation tells us that the sum of the three vectors results in the unit vector 1 in the j-direction.

Step 1: Express Vectors in Component Form

Let:
A=Axi^+Ayj^A⃗ = A_x \hat{i} + A_y \hat{j} B=Bxi^+Byj^B⃗ = B_x \hat{i} + B_y \hat{j} C=Cxi^+Cyj^C⃗ = C_x \hat{i} + C_y \hat{j}

The equation then expands as:

(Ax+Bx+Cx)i^+(Ay+By+Cy)j^=0i^+1j^(A_x + B_x + C_x) \hat{i} + (A_y + B_y + C_y) \hat{j} = 0\hat{i} + 1\hat{j}

Step 2: Solve for BxB_x and ByB_y

This results in two separate component equations:

  1. Ax+Bx+Cx=0A_x + B_x + C_x = 0 (for the i component)
  2. Ay+By+Cy=1A_y + B_y + C_y = 1 (for the j component)

If you provide the values of AA⃗ and CC⃗, we can solve for B⃗ explicitly.

Would you like to upload the figure so I can extract the values of AA⃗ and CC⃗?


Related Questions

  1. How do you find the resultant of three vectors graphically?
  2. What is the significance of unit vectors in vector addition?
  3. How do you decompose a vector into its components?
  4. What is the method for solving vector equations algebraically?
  5. How does the parallelogram rule relate to vector addition?

Tip: Always check your units when working with vector components to avoid calculation errors!

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Math Problem Analysis

Mathematical Concepts

Vector Addition
Component Form of Vectors
Algebra

Formulas

A⃗ = A_x î + A_y ĵ
B⃗ = B_x î + B_y ĵ
C⃗ = C_x î + C_y ĵ
A_x + B_x + C_x = 0
A_y + B_y + C_y = 1

Theorems

Vector Addition Theorem
Component Form of Vectors

Suitable Grade Level

Grades 10-12