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Q: Under the action of which set of forces will a body be in equilibrium?
  • A. Two unequal and parallel forces
  • B. Two equal and parallel forces
  • C. Two unequal and opposite forces
  • D. Two equal and opposite forces
Correct Answer: Option D - When a body is subjected to two forces, then the body will be in equilibrium if the two forces are collinear, equal and opposite. If the two forces acting on body are equal and opposite but are parallel then the body will not be in equilibrium
D. When a body is subjected to two forces, then the body will be in equilibrium if the two forces are collinear, equal and opposite. If the two forces acting on body are equal and opposite but are parallel then the body will not be in equilibrium

Explanations:

When a body is subjected to two forces, then the body will be in equilibrium if the two forces are collinear, equal and opposite. If the two forces acting on body are equal and opposite but are parallel then the body will not be in equilibrium