NEET Physics: Equilibrium of concurrent forces Practice Questions

Q1. A body is held stationary on a frictionless surface by the action of two tension forces, T₁ and T₂, acting at angles θ₁ and θ₂ with the horizontal. For the body to remain in equilibrium, which condition must be satisfied regarding these forces?

• AThe net force acting on the body must be zero
• BThe magnitudes of the forces must be equal (T₁ = T₂)
• CThe sum of the components must be zero
• DThe forces must be acting in the same direction

Q2. If a body is in equilibrium, what can be concluded about the magnitude of the forces acting on it?

• AThe magnitudes of the forces must be equal.
• BThe magnitudes of the forces must be unequal.
• CThe magnitudes of the forces must be zero.
• DThe magnitudes of the forces can be anything, provided they balance.

Q3. If three forces acting on a particle are concurrent (meet at a single point), and the particle is in equilibrium, what must be true about the vector sum of these three forces?

• AThe sum of the magnitudes of the forces is zero
• BThe sum of the forces must be a line
• CThe forces must be collinear
• DThe sum of the forces is zero

Q4. A body is held stationary on a smooth horizontal surface by the action of three concurrent forces. What must be the relationship between these forces for the body to be in equilibrium?

• AThe forces must be directed along the same line.
• BThe vector sum of the forces is non-zero.
• CThe vector sum of the forces acting on the body must be zero.
• DThe magnitude of the forces must be equal.

Q5. A body is said to be in equilibrium if the resultant of all the concurrent forces acting on it is:

• Aequal to the net force
• Bnon-zero
• Czero
• Dpositive

Q6. A body is held in equilibrium under the action of three concurrent forces. Which of the following statements is true?

• AThe magnitude of the resultant force is non-zero.
• BThe net force acting on the body is zero.
• COnly two of the forces need to be balanced to achieve equilibrium.
• DThe forces must be acting in three different directions.

Q7. A system of forces acting on a particle is in equilibrium. What can be concluded about the forces?

• AAll forces must be equal.
• BThe forces must be non-collinear.
• CThe forces must act perpendicularly.
• DThe vector sum of the forces is zero.

Q8. If the net force acting on a body is non-zero, what state of motion does the body exhibit?

• AThe body is in equilibrium.
• BThe body is at rest.
• CThe body is accelerating.
• DThe body is moving with constant velocity.

Q9. For a particle to be in equilibrium, the forces acting on it must be balanced. This balance implies that the net force acting on the particle is:

• Aequal to the momentum.
• Bproportional to the mass of the particle.
• Cdirected along the direction of motion.
• Dzero.

Q10. Two forces, F₁ = 10 N and F₂ = 10 N, act on a particle, making an angle of 60° between them. If the particle is in equilibrium, what must be the angle between the two forces?

• A90°
• B60°
• C120°
• D0°

Q11. For a body to be in equilibrium, what must be true about the forces acting on it?

• AThe forces must all be equal in magnitude.
• BThe net force acting on the body must be zero.
• CThe forces must be acting along the same line.
• DThe forces must be balanced only if they are collinear.

Q12. A body is held stationary by two forces acting at an angle. For equilibrium to be maintained, the resultant force must be:

• Azero.
• Bequal to the acceleration.
• Cdirected towards the center of the body.
• Dnon-zero.

Q13. Two forces, F₁ = 10 N and F₂ = 10 N, act on a particle. If the angle between the forces is 90°, what is the resultant force?

• A10 N
• B10 √2 N
• C10 N/√2 N
• D0 N

Q14. If two forces act on a particle and the particle remains at rest, what is the relationship between the forces?

• AThe forces must be opposite and equal
• BThe forces must be zero
• CThe forces must be perpendicular
• DThe magnitudes of the forces must be equal