two forces of the4N acts on a body at an angle of 60 find magnitude and direction of the resulttantforce acting acting on body
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Answered by
0
Explanation:
Let say two vectors
→
P
and
→
Q
are represented by the two sides of a triangle with an angle between them, then the resultant vector is represented by the third side of the triangle in both magnitude and direction.
In any triangle, the magnitude of the third side is given by ( using trigonometry )
R
=
√
P
2
+
Q
2
+
2.
|
P
|
.
|
Q
|
cos
θ
, where
θ
is the angle between the two vectors
→
P
and
→
Q
.
We will apply this law to solve the question.
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