Two forces of 5N and 12N act at right angles to each other. Using a piece of graph paper determine the magnitude and direction of the resultant force graphically. ffxhpzquym State the scale you used to represent each vector. You will need a protractor to measure the angle the resultant makes with the 5N force. *Inappropriate answers shall be reported!
Answers & Comments
Verified answer
Answer:
Here,
R
=
A
+
B
or
R
.
R
=(
A
+
B
).(
A
+
B
)
or R
2
=A
2
+B
2
+2ABcosθ where θ be the angle between vectors A and B.
When R=17N⇒17
2
=5
2
+12
2
+2(5)(12)cosθ or cosθ=1=cos0 or θ=0
o
When R=7N⇒7
2
=5
2
+12
2
+2(5)(12)cosθ or cosθ=−1=cos180 or θ=180
o
When R=13N⇒13
2
=5
2
+12
2
+2(5)(12)cosθ or cosθ=0=cos90 or θ=90⁰