$A$ body is in equilibrium under the influence of a number of forces. Each force has a different line of action. The minimum number of forces required is
$A$ body is in equilibrium under the influence of a number of forces. Each force has a different line of action. The minimum number of forces required is
- A
$4$, if their lines of action are parallel and all the forces have the same magnitude.
- B
$3$, if their lines of action are not parallel.
- C
$3$, if their lines of action are parallel.
- D
All of the above
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