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UPSC Civil Service Exam Questions - Engineering

Q1:

The graphical condition for equilibrium of concurrent forces is that

A both the force polygon and the funicular polygon must be closed figures

B funicular polygon should be a closed figure

C force polygon need not be a closed figure

D force polygon should be a closed figure

ANS:A - both the force polygon and the funicular polygon must be closed figures

The graphical condition will act equlilbirium for the closed figures.