02. The side of a square ABCD is 4m. Forces 8, 6, 4 and 10V2 Newton acts along the sides CB, BA, DA and
DB respectively. Find the algebraic sum of moments of the system of forces about C.
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Explanation:
Correct option is
A
2
2
P
The resultant of 4 vectors in X, Y direction are:
resultant in X direction is
3
P
−
P
=2
P
(in -ve x direction)
In y direction is
4
P
−2
P
=2
P
(in +ve y direction)
So, the net resultant force vector is
R
→
=2
P
→
+2
P
→
angle between both vectors is 90
So magnitude of resultant is 2
2
P in direction of 45
0
from positive y axis in IV quadrant.
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