Prove that the resultant of two forces acting at point O and represented by OB and OC is given by
2 OD, where D is the midpoint of BC.
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Answer:
resultant =2 OD
Step-by-step explanation:
The two forces always give a resultant
which can be represented by a parallelogram
The OB and OC being the adjusting sides of the parallelogram
The resultant = OA
As we know the diagonals of parallelogram bisect each other.
Therefore D is the midpoint of OA
Therefore
Resultant
OA = 2 × OD
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