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For the vectors A¯ and B→in Fig. E1.24, use a scale drawing to find the magnitude and direction of (a) the vector sum A¯+ B→and (b) the vector difference. A¯- B→Use your answers to find the magnitude and direction of (c) -A¯- B→and (d) B→- A¯(See alsoExercise 1.31 for a different approach.)


Short Answer

Expert verified

The value of A+B is 9m, the value of A-B is 22m, the value of –A-B is also 22 but different direction and B-A is 9 meter.

Step by step solution

01

Determining the length 

Calculate the length of the 15.0-meter vector and use it as x. Then, for sections (a) and (b), measure the length Here,

To calculate the appropriate distances and angles, use a ruler and a protractor, accordingly. if the vector sums and enter that value in for z. To find the magnitude, solve for y. To determine any angles, use a protractor.

15x=yz

The above equation can be used in drawing the further figure.

02

Step 2: Calculation of the vector sum A→+B→ 

Draw the parallelogram that A¯and B→create. The vector from the origin to the opposite corner of the parallelogram is their sum.

A+ B vector diagram

03

For calculation of part B  A-B 

The vector B has the same magnitude and direction as −B but points in the opposite sense. Draw the parallelogram formed by A and −B and the vector from the origin to the opposite corner of the parallelogram. This is the sum A−B.

04

For calculation of part B -(A+B)

−(A−B=−(A+B) has the same magnitude and direction as A+B but opposite sense.

Ray diagram for case 3

05

Step 5:For calculation of part D  B-A

B-Ahave same value as A-B but only direction will be changed for option D is similar to that of B.

Diagram for case for

Hence here the value of A+Bis 9m, the value ofA-B is 22m, the value of–A-B is also 22 but different direction and B-A is 9 meter

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