A rigid body is subjected to a coplanar system of forces that reduce to a non-zero couple. Which of the following statements is true?
The body is in static equilibrium because the resultant linear force of the system is zero.
The total moment of the system of forces is the same about any point in the plane.
The system can be brought into complete equilibrium by applying a single force of suitable magnitude and direction at the body's centre of mass.
The moment of the couple varies linearly with the perpendicular distance from the pivot point to the midpoint between the forces.
84 exam-style questions on AQA A Level Physics Force, energy and momentum, covering Scalars and vectors, Moments, Motion along a straight line, Projectile motion, Newton's laws of motion, Momentum, Work, energy and power, and Conservation of energy. Each one has a worked solution and a mark scheme showing where the marks go.