Question

Three concurrent co-planar forces $1N,2N$ and $3N$ acting along different directions on a body

• A. can keep the body in equilibrium if 1 N and 2 N act at right angles.
• B. cannot keep the body in equilibrium
• C. can keep the body in equilibrium if 1 N and 3 N act at an acute angle.
• D. can keep the body in equilibrium if 2 N and 3 N act at right angles

Answer 1

Answer: (B)

If we keep $1N$ and $2N$ forces act in same direction then these are balanced by $3N$ force, but this is against statement of question.