In Figure 1.59, the vector r1points to the location of object 1 and r2points to the location of object 2 . Both vectors lie in the xyplane. (a) Calculate the position of object 2 relative to object 1 , as a relative position vector. (b) Calculate the position of object 1 relative to object 2 , as a relative position vector.

Short Answer

Expert verified

(a) Position of object 2 relative to object 1 is:r2-r1=2,4,0m.

(b) Position of object 1 relative to object 2 is: r2-r1=-2,-4,0m.

Step by step solution

01

Identification of given data

r1=3,-2,0mr2=5,2,0m

02

Calculating the position of object 2 relative to object 1

(a) To find the position of object 2 relative to object 1 we need first to find their locations relative to the origin, and that is by describing the point where the head of the vectors arrows are located. For object 1, it has the location 3,-2,0m (that's meanr1=3,-2,0m), where object 2 is located at (that's mean r2=5,2,0m). Now the position of object 2 relative to object 1 is

r=r2-r1=5,2,0-3,-2,0=2,4,0m.

03

Calculating the position of object 1 relative to object 2

(b) To find the position of object 1 relative to object 2 we find the do the follow (rememberr1=3,-2,0m, andr2=5,2,0m).

r1-r2=-r3,-2,0-5,2,0=2,-4,0m

which makes sense because starting from object 2, you must go 2 units to the left and 4 units down to reach object 1

Therefore, (a) The relativeposition of object 2 from object 1 is:r2-r1=2,4,0m.

(b) The relative position of object 1 from object 2 is: r1-r2=-2,-4,0m.

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