02
Q. 1) There are two force vectors, one of sn
and other
other of 12 N at what angle the
two vectors be added to get resulta
nt vector of 17 N , IN and BN respection
Answers
Answered by
1
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=90
o
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