When the gardener pushes with a force of 300n the tree stump just begins to move calculate the moment produced by the gardener on the steel bar?

To calculate the moment (torque) produced by the gardener on the steel bar, you need to know the distance from the pivot point (where the bar is anchored) to where the force is applied. The moment can be calculated using the formula: Moment = Force × Distance. If, for example, the force is applied 1 meter from the pivot, the moment would be 300 N × 1 m = 300 Nm. Without the specific distance, the moment cannot be determined accurately.