An object is in mechanical equilibrium. Which statement correctly and completely describes the conditions required for this state?
There are no external forces or torques acting on the object.
The net (resultant) force acting on the object is zero, and the net (resultant) torque (turning effect) about any point is zero.
The object must be completely at rest and cannot be in motion.
The sum of the clockwise moments about any pivot must be equal to the sum of the anticlockwise moments about that pivot, regardless of any net translational force.
43 exam-style questions on CIE IGCSE Physics 1.5.2a Moment of a force. Each one has a worked solution and a mark scheme showing where the marks go.